Editor’s Note: This is the second of two postings of a Q&A conducted primarily by the Federation of American Scientists regarding the current situation on the Korean Peninsula. Developed and edited by Charles P. Blair, Mark Jansson, and Devin H. Ellis, the authors’ responses have not been edited; all views expressed by these subject-matter experts are their own. Please note that additional terms are used to refer to North Korea and South Korea, i.e., the DPRK and ROK respectively.

Researchers from the Federation of American Scientists (FAS) asked seven individuals who are experts in East Asia about the the recent escalation in tensions on the Korean Peninsula. Is North Korea’s recent success with its nuclear test and satellite launch evidence that it is maturing? Is there trepidation in Japan over the perceived threat of North Korea attacking Japan with a nuclear weapon? Has North Korea mastered re-entry vehicle (RV) technology?  Is there any plausible way to de-nuclearize North Korea?

This is the second part of the Q&A, featuring Dr. Yousaf Butt, Dr. Jacques Hymans and Ms. Masako Toki. Read the first part here. (more…)

Editor’s Note: This is the first of two postings of a Q&A conducted primarily by the Federation of American Scientists regarding the current situation on the Korean Peninsula. Developed and edited by Charles P. Blair, Mark Jansson, and Devin H. Ellis, the authors’ responses have not been edited; all views expressed by these subject-matter experts are their own. Please note that additional terms are used to refer to North Korea and South Korea, i.e., the DPRK and ROK respectively.

Researchers from the Federation of American Scientists (FAS) asked seven individuals who are experts in East Asia about the the recent escalation in tensions on the Korean Peninsula. Is North Korea serious about their threats and are we on the brink of war? What influence does China exert over DPRK, and what influence is China wiling to exert over the DPRK? How does the increase in tension affect South Korean President Park Guen-he’s political agenda?

This is the first part of the Q&A featuring Dr. Ted Galen Carpenter, Dr. Balbina Hwang, Ms. Duyeon Kim and Dr. Leon Sigal. Read part two here.

(more…)

By Hans M. Kristensen

After two years of stalling, the latest New START Treaty aggregate data released today by the State Department indicates that U.S. warhead reductions under the treaty are finally picking up.

Russia, which is already below the treaty limit, has been more or less flatlining over the past year.

Seen in perspective, however, the warhead reductions achieved under New START so far are not impressive: since the treaty entered into effect in February 2011, the world’s two largest nuclear weapons states – with combined stockpiles of nearly 10,000 warheads – have only reduced their deployed arsenals by a total of 203 warheads!

The data for the United States shows a reduction of 68 warheads compared with September 2012. Fourteen of those are probably “fake” warheads attributed to B-52G bombers that are counted as deployed under the treaty, although they are neither deployed nor nuclear tasked anymore. The remaining 54-warhead reduction probably reflects downloading of the remaining MIRVed ICBMs (and some fluctuations in SLBM loadings of SSBNs in refit). Another 104 warheads will have to be reduced over the next five years to meet the treaty limit of 1,550 deployed accountable warheads by 2018 (although many of those will come from reducing bombers that are not actually assigned nuclear weapons).

Russia, which has been below the ceiling of 1,550 deployed accountable strategic warheads for the past year, appears to be flatlining. It is counted with a 19-warhead reduction compared with September 2012. But that number is too low say whether it reflects real reductions due to retirement of missiles or just fluctuations in SLBM loadings on SSBNs in refit. Russia increased its delivery vehicles slightly due to deployment of the first new Borei-class SSBN.

What’s most striking about the data, though, is the significant asymmetry in delivery vehicles: the United States has 300 deployed delivery vehicles more than Russia, a disparity that causes Russia to deploy more warheads on each delivery vehicle and fuels worst-case military planning and paranoia about treaty break-out plans.

A clear objective for the next arms control agreement between the United States and Russia will have to be to reduce the U.S. delivery vehicles and Russian warhead loading to improve stability of the postures.

Moreover, with only 203 deployed warheads cut since the New START Treaty entered into effect more than two years ago, and nearly 10,000 nuclear warheads remaining in their stockpiles combined, there is clearly a need for the United States and Russia to speed up implementation of the treaty and agree to significant additional reductions.

[Details about the reductions are murky because the aggregate data only includes overall numbers, and does not specify how many of each delivery system are counted. A more detailed analysis will follow when the full detailed U.S. data becomes available in a few weeks.]

Background: See previous New START Treaty data analysis

This publication was made possible by a grant from the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

.By Hans M. Kristensen

Tonight I’ll be debating additional nuclear weapons reductions with former Assistant Secretary of State Stephen Rademaker at a PONI event at CSIS.

I will argue (prepared remarks here) that the United States could make more unilateral nuclear arms reductions in the future, as it has safely done in the past, as I argued in Trimming Nuclear Excess, in addition to pursuing arms control agreements. Mr. Rademaker will argue against unilateral reductions in favor of reciprocal or negotiated ones.

I suspect there will be a fair amount of overlap in the arguments but it is certainly a timely debate with the Obama administration pursuing additional reductions with Russia, the still-to-be-announced Nuclear Posture Review Implementation Study having determined that the United States can meet its national security and extended deterrence obligations with 500 fewer deployed strategic warheads, and budget cuts forcing new thinking about how many nuclear weapons and of what kind are needed.

The doors open at CSIS on 1800 K Street at 6 PM for a reception followed by the debate starting at 6:30 PM.

Document: Prepared remarks

By Hans M. Kristensen

The United States has quietly reduced its nuclear weapons stockpile by nearly 500 warheads since 2009. The current stockpile size represents an approximate 85-percent reduction compared with the peak size in 1967, according to information provided to FAS by the National Nuclear Security Administration (NNSA).

The reduction is unilateral and not required by any arms control treaty. It apparently includes retirement of warheads for the last non-strategic naval nuclear weapon, the nuclear Tomahawk land-attack cruise missile (TLAM/N).

85 Versus 87

One of the interesting moments at the Deterrence Summit last week came when Dr. Donald Cook, who is NNSA’s administrator for defense programs, talked about the size of the U.S. nuclear weapons stockpile.

At one point, Dr. Cook said that there are “roughly 5,000” warheads in the stockpile today.  And then he added: “Today it’s, I’ll just say it’s a bit under about 5,000…about an 87 percent reduction” compared with the peak in 1967. (The 87 percent statements occurs 2:52:25 into the CSPAN recording).

Since the peak size of the stockpile has been declassified (31,255 warheads in 1967), an 87 percent reduction would in fact be quite a bit under 5,000 – a stockpile of 4,063 warheads, to be precise. If so, the stockpile would have shrunk by 1,050 warheads since September 2009 when the stockpile contained 5,113 warheads.

The number didn’t fit the stockpile estimate that Norris and I currently have (4,650 warheads), so I contacted Dr. Cook to double check if he meant to say 87 percent. He told me that it was an error and that the correct figure was “approximately 85% reduction.” That corresponds to a stockpile of roughly 4,688 warheads (depending on how many digits “approximately” implies), or about 38 warheads off our estimate of 4,650 warheads.

The warheads retired since 2009 apparently include the W80-0 warhead previously used on the nuclear Tomahawk land-attack cruise missile (TLAM/N). The 2010 Nuclear Posture Review decided the weapon was no longer needed, and “a very substantial number of W80-0″ warheads already have been dismantled, Dr. Cook told Congress last week.  [Update 21 Mar: FY12 Pantex Performance Evaluation Report states (p.24): “All W80-0 warheads in the stockpile have been dismantled.” (Thanks Jay!)].

The last remaining U.S. non-strategic naval nuclear weapon – the Tomahawk land-attack cruise missile (TLAM/N – appears to have been retired in accordance with the 2010 Nuclear Posture Review determination that the weapon is no longer needed.

.

Implications

Why is the size of the stockpile an issue? Well, first, because the Obama administration in 2010 declassified the 64-year history of the stockpile from 1945 through September 2009 because, as the Pentagon explained at the time, increasing transparency is important for U.S. nonproliferation efforts and additional arms reductions beyond the New START treaty. In his briefing, Dr. Cook also pointed to the importance of transparency.

Second, the size of the stockpile is important because although the administration has declassified 64 years of its history, its current size is – yes, you guessed it – still a secret. In fact, officials have told us that the 2010 disclosure was a one-time decision, not something that would be updated each year. So all stockpile numbers after September 2009 are still secret. Deep in the dark corridors of the Pentagon there are still people who believe this is necessary for national security.

Third, the unilateral retirement of roughly 500 warheads from the stockpile since 2009 – an inventory comparable to the total stockpiles of China and Britain combined – is political dynamite (no pun intended) because conservative Cold Warriors in Congress (and elsewhere) vehemently oppose unilateral reductions of U.S. nuclear weapons. Their argument is (as best I can gauge) that Russia and China are modernizing their nuclear weapons, and North Korea has just conducted a nuclear test. Therefore, so the thinking goes, it would somehow be detrimental to U.S. national security to unilaterally reduce its nuclear weapons.

The argument is, of course, deeply flawed because the reductions that Dr. Cook describe are warheads that the military has decided it no longer needs to meet presidential guidance for maintaining a strong nuclear deterrent in support of national security and reassurance of allies. Similar unilateral adjustments of the stockpile have been made by both Republican and Democratic administrations in the past.

The saga about stockpile classification and declassification is also important because it exemplifies a deeply schizophrenic policy. On the one hand, the administration has declassified decades worth of formerly secret stockpile information, emphasizes the continued importance of nuclear weapons transparency to support nonproliferation and arms control efforts, and urges other nuclear weapons states to be more open about their arsenals. At the same time, the administration continues to keep secret the current size of the stockpile, which, among other effects, forces officials such as Dr. Cook to be unnecessarily vague about the extent to which the United States continues to make progress on reducing nuclear weapons in compliance with its obligations under the nuclear Non-Proliferation Treaty.

Recommendations

If the administration believes that nuclear transparency is important, then it must continue to disclose stockpile numbers and avoid drifting back into automatic nuclear secrecy. It should also declassify how many weapons are dismantled each year and how many retired warheads are in storage awaiting dismantlement.

The Pentagon said in 2010 that it was looking at declassifying the number of weapons awaiting dismantlement, but so far nothing has happened.

The Nuclear Posture Review stated in 2010: “Today, there are several thousand nuclear warheads awaiting dismantlement, and this number will increase as weapons are removed from the stockpile under New START.” Actually, the New START Treaty does not require that nuclear warheads be removed from the stockpile, but the military will nonetheless probably retire the roughly 500 warheads assigned to the 48 SLBMs and 50 ICBMs that will be retired under the treaty.

We estimate that “several thousand” currently means about 3,000 retired warheads, and that 300-400 warheads are dismantled each year.

Declassification of the back-end (dismantlement numbers) of the nuclear posture goes hand in hand with declassification of the front-end (stockpile size) because dismantlement numbers prove that the United States is actually getting rid of the weapons and not just putting them in storage. That is the key message that unnecessary secrecy prevents U.S. officials from being able to convey to the international nonproliferation community.

This publication was made possible by a grant from the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

.By Hans M. Kristensen

The United States and Russia have some 1,800 nuclear warheads on alert on ballistic missiles that are ready to launch in a few minutes, according to a new study published by UNIDIR. The number of U.S. and Russian alert warheads is greater than the total nuclear weapons inventories of all other nuclear weapons states combined.

The report Reducing Alert Rates of Nuclear Weapons is co-authored by Matthew McKinzie from the Natural Resources of Defense Council and yours truly.

France and Britain also keep some of their nuclear force on alert, although at lower readiness levels than the United States and Russia. No other nuclear weapon state has nuclear weapons on alert.

The report concludes that the warning made by opponents of de-alerting, that it could trigger a re-alerting race in a crisis that count undermine stability, is a “straw man” argument that overplays risks, downplays benefits, and ignores that current alert postures already include plans to increase readiness and alert rates in a crisis.

According to the report, “while there are risks with alerted and de-alerted postures, a re-alerting race that takes three months under a de-alerted posture is much preferable to a re-alerting race that takes only three hours under the current highly alerted posture. A de-alerted nuclear posture would allow the national leaders to think carefully about their decisions, rather than being forced by time constraints to choose from a list of pre-designated responses with catastrophic consequences.”

During his election campaign, Barack Obama promised to work with Russia to take nuclear weapons off “hair-trigger” alert, but the 2010 Nuclear Posture Review (NPR) instead decided to keep the existing alert posture. The post-NPR review that has now been completed but has yet to be announced hopefully will include a reduction of the alert level, not least because the Intelligence Community has concluded that a Russian surprise first strike is unlikely to occur.

The UNIDIR report finds that the United States and Russia previously have reduce the alert levels of their nuclear forces and recommends that they continue this process by removing the remaining nuclear weapons from alert through a phased approach to ensure stability and develop consultation and verification measures.

Full report: Reducing Alert Rates of Nuclear Weapons (FAS mirror)

This publication was made possible by a grant from the Swiss Government. General nuclear forces research is supported by the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the authors.

By Hans M. Kristensen

In early February, I participated in a conference in Warsaw on non-strategic nuclear weapons. The conference was organized by the Polish Institute of International Affairs, the Norwegian Institute for Defense Studies, and the Carnegie Endowment for International Peace. It was supported by the Ministry of Foreign Affairs of Norway and the Ministry of Foreign Affairs of Poland, with the participation of the U.S. State Department.

The conference had very high-level government representation from the United States and NATO, and included non-governmental experts from the academic and think-tank communities in Russia and NATO countries. The Russian government unfortunately did not send participants.

The United States and NATO want to broaden the arms control agenda to non-strategic nuclear weapons, which have so far largely eluded limitations and verification. The objective of the conference was to try to identify options for how NATO and Russia might begin to discuss confidence-building measures and eventually limitations on non-strategic nuclear weapons.

The conference commissioned eight working papers to form the basis for the discussions. My paper, which focused on identifying common definitions for categories of non-strategic nuclear weapons, recommended starting with air-delivered weapons as the only compatible category for negotiations on U.S-Russian non-strategic nuclear weapons.

Background: Working papers and lists of participants are available on the PISM web site. For background on non-strategic nuclear weapons, see this FAS report.

This publication was made possible by a grant from the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

By Hans M. Kristensen

With the ink barely dry on the New START Treaty, Jeff Smith at the Center for Public Integrity reports that the Obama administration has determined that the United States can meet its national and international security requirements with 1,000-1,100 deployed strategic nuclear warheads – 450-550 warheads less than planned under the New START Treaty.

The administration is exploring how to get Russian agreement to the reductions without a new treaty, according to the New York Times. That would avoid a new agreement being held hostage to conservative Cold Warriors in Congress who fought ratification of the New START Treaty. Their efforts will be complicated by the fact that the U.S. military (and others) backs the reduced force level.

This is great news that reaffirms the administration’s commitment to continuing reducing excessive nuclear force levels. The fact that the new force level ended up closer to 1,000 than 1,200 warheads continues the 30 percent step-by-step reduction trend of the New START Treaty. The new initiative apparently also seeks reductions of non-deployed and non-strategic nuclear weapons, although it is unclear whether this is part of the first phase of the effort.

The lower force level has the potential to save billions of dollars, but how much depends on how the administration decides to implement it.

Reduction Options

The United States could meet the lower force level simply by reducing the warhead loading on ballistic missile submarines but without changing the force structure planned under the New START Treaty (see Table 1, Option 1). This would be a mistake because it would make it hard to convince Russia to join and it would save little money.

A more likely option would be to combine an ICBM reduction with a smaller SLBM download (Table 1, Option 2). That would reduce the ICBM force to 300 missiles and the overall force structure to 600 deployed launchers, or 100 less than under New START. Reducing the ICBM force to 300 from 400 planned under new START – a reduction of 150 from today’s 450 Minuteman III missiles – could be achieved by closing one of the three ICBM bases. A more likely option would be to spread job losses across the force by reducing the number of missile squadrons at each wing from three to two.

Another option would be to cut the ICBM force to 300 and reduce the missile loading on each SSBN from 20 planned under New START to 16, the same number planned for the next-generation SSBN (Table 1, Option 3). This option would reduce the force structure by nearly 150 deployed launchers below New START limit, thereby limiting the large advantage compared with Russia’s smaller force structure.

Yet another option could be to retire two SSBNs and reduce the ICBM force to 300. This option (Table 1, Option 4) would cancel the expensive refueling overhauls of the USS Wyoming (SSBN-742) and USS Louisiana (SSBN-743), retire the two submarines, and reduce the SSBN force to 12. Only 10 of those would be available for deployment.

How would a reduction to 1,000-1,100 deployed strategic warheads affect Russia’s posture? There are many uncertainties about how Russia’s missile forces will evolve over the next decade, but by the early 2020s the number of deployed missiles might decline to some 350 (down from around 450 today), or significantly less than the 700 permitted by the New START Treaty. So a new treaty would likely have little effect on reducing Russian deployed launchers.

The most important effect of a new limit of 1,000-1,100 deployed strategic warheads would be to reduce the warhead loading on Russia’s ICBMs. This is particularly important because Russia compensates for its smaller missile inventory by deployed more warheads on each missile. Again, the numbers are uncertain, but the lower warhead limit could potentially reduce Russian ICBM warheads by as much as 50 percent from roughly 800 estimated under the New START Treaty to approximately 400 warheads under the new reduced limit (see Table 2).

The only reason Russia would agree to this, it seems, is if the United States significantly reduced its deployed missiles and also reduced the number of warheads kept in reserve as a potential upload capability. The combination of a larger U.S. missile force with a large upload capacity is a significant breakout capability that undermines the changes of reaching a new agreement.

It is double important that a new agreement limits the upload capability because it could otherwise result in Russia also creating a “hedge” of non-deployed strategic warheads. Closing this “reconstitution” loophole in the arms reduction process is important for making nuclear reductions irreversible.

Effect on Role of Nuclear Weapons

How the reduced force level will reduce the role of nuclear weapons is yet unclear. President Obama stated in his Prague speech that he wanted to “put an end to Cold War thinking” by reducing “the role of nuclear weapons in our national security strategy.”

We have yet to hear how the new guidance puts and end to Cold War thinking in the way the military is required to plan for the potential use of nuclear weapons. Smith’s article states that the lower deployed warhead level would be achieved by U.S. Strategic Command “targeting fewer, but more important, military or political sites in Russia, China, and several other countries.”

If so, that would appear to refer to what is known as “nodal targeting,” in which planners focus targeting with nuclear forces on the most important facilities rather than holding at risk all facilities within a target category. Nodal targeting has been used for the past two decades to reduce warhead requirements and focus the strategic nuclear war plan on effects rather than on creating rubble.

The current nuclear war plan (OPLAN 8010, Strategic Deterrence and Global Strike [/blog/ssp/2010/02/warplan.php]) is designed to hold at risk nuclear and other weapons of mass destruction (WMD) forces, command and control, military and political leadership, and war supporting industries of six potential adversaries: Russia, China, North Korea, Iran, Syria (a country that might be dropped from the plan soon, if it hasn’t happened already), and a non-state WMD attack.

The Obama administration’s nuclear targeting review appears to have considered a nuclear targeting option similar to what we proposed in this study in 2009.

Focusing nodal targeting more would not necessarily change how nuclear targeting is performed. Nor does a force level itself of 1,000-1,100 deployed strategic warheads suggest that the day-to-day alert level of the forces has been reduced significantly. Indeed, Smith’s story describes that the review considered, but rejected, a proposal by the State Department, National Security Council staff, and Vice President Biden’s staff to consider changing targeting policy more fundamentally:

“A much steeper reduction, to around 500 total warheads, was debated within the administration last year, but rejected, sources said. Known as the “deterrence only” plan, it would have aimed U.S. warheads at a narrower range of targets related to an enemy’s economic capacity and no longer emphasized striking the enemy’s leadership and weaponry in the first wave of an attack. […]

Some officials at the State Department, the NSC staff, and Vice president Biden’s staff urged consideration of the smaller arsenal and new targeting policy, officials said. But ‘a small brake’ was applied by the Joint Chiefs of Staff chairman, Army Gen. Martin E. Dempsey, who worried that making such a major policy change was too risky at a moment of upheaval in conventional military strategy, and would create too much uncertainty among allies, said one of the sources with knowledge of the discussion.”

This appears to refer to a targeting policy similar to the one FAS and NRDC proposed in our 2009 study From Counterforce to Minimal Deterrence as a way of putting an end to Cold War thinking in nuclear planning. President Obama apparently “decided we did not need to do deterrence-only targeting now,” but did not rule it out for later.

Obviously, we have more work to do to put an end to Cold War thinking.

This publication was made possible by a grant from the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

Despite enormous reductions of their nuclear arsenals since the Cold War, the United States and Russia retain more than 9,100 warheads in their military stockpiles. Another 7,000 retired – but still intact – warheads are awaiting dismantlement, for a total inventory of more than 16,000 nuclear warheads.

This is more than 15 times the size of the total nuclear arsenals of all the seven other nuclear weapon states in the world – combined.

The U.S. and Russian nuclear arsenals are far beyond what is needed for deterrence, with each side’s bloated force level justified only by the other’s excessive force level.

The FAS report – Trimming Nuclear Excess: Options for Further Reductions of U.S. and Russian Nuclear Forces – describes the status and 10-year projection for U.S. and Russian nuclear forces.

The report concludes that the pace of reducing nuclear forces appears to be slowing compared with the past two decades. Both the United States and Russia appear to be more cautious about reducing further, placing more emphasis on “hedging” and reconstitution of reduced nuclear forces, and both are investing enormous sums of money in modernizing their nuclear forces over the next decade.

Even with the reductions expected over the next decade, the report concludes that the United States and Russia will continue to possess nuclear stockpiles that are many times greater than the rest of the world’s nuclear forces combined.

New initiatives are needed to regain the momentum of the nuclear arms reduction process. The New START Treaty from 2011 was an important but modest step but the two nuclear superpowers must begin negotiations on new treaties to significantly curtail their nuclear forces. Both have expressed an interest in reducing further, but little has happened.

New treaties may be preferable, but reaching agreement on the complex inter-connected issues ranging from nuclear weapons to missile defense and conventional forces may be unlikely to produce results in the short term (not least given the current political climate in the U.S. Congress). While the world waits, the excess nuclear forces levels and outdated planning principles continue to fuel justifications for retaining large force levels and new modernizations in both the United States and Russia.

To break the stalemate and reenergize the arms reductions process, in addition to pursuing treaty-based agreements, the report argues, unilateral steps can and should be taken in the short term to trim the most obvious fat from the nuclear arsenals. The report includes 32 specific recommendations for reducing unnecessary and counterproductive U.S. and Russian nuclear force levels unilaterally and bilaterally.

Download Full Report

By Hans M. Kristensen

Despite enormous reductions of their nuclear arsenals since the Cold War, the United States and Russia retain more than 9,100 warheads in their military stockpiles. Another 7,000 retired – but still intact – warheads are awaiting dismantlement, for a total inventory of more than 16,000 nuclear warheads.

This is more than 15 times the size of the total nuclear arsenals of all the seven other nuclear weapon states in the world – combined.

The U.S. and Russian nuclear arsenals are far beyond what is needed for deterrence, with each side’s bloated force level justified only by the other’s excessive force level.

A new FAS report – Trimming Nuclear Excess: Options for Further Reductions of U.S. and Russian Nuclear Forces – describes the status and 10-year projection for U.S. and Russian nuclear forces.

The report concludes that the pace of reducing nuclear forces appears to be slowing compared with the past two decades. Both the United States and Russia appear to be more cautious about reducing further, placing more emphasis on “hedging” and reconstitution of reduced nuclear forces, and both are investing enormous sums of money in modernizing their nuclear forces over the next decade.

Even with the reductions expected over the next decade, the report concludes that the United States and Russia will continue to possess nuclear stockpiles that are many times greater than the rest of the world’s nuclear forces combined.

New initiatives are needed to regain the momentum of the nuclear arms reduction process. The New START Treaty from 2011 was an important but modest step but the two nuclear superpowers must begin negotiations on new treaties to significantly curtail their nuclear forces. Both have expressed an interest in reducing further, but little has happened.

New treaties may be preferable, but reaching agreement on the complex inter-connected issues ranging from nuclear weapons to missile defense and conventional forces may be unlikely to produce results in the short term (not least given the current political climate in the U.S. Congress). While the world waits, the excess nuclear forces levels and outdated planning principles continue to fuel justifications for retaining large force levels and new modernizations in both the United States and Russia.

To break the stalemate and reenergize the arms reductions process, in addition to pursuing treaty-based agreements, the report argues, unilateral steps can and should be taken in the short term to trim the most obvious fat from the nuclear arsenals. The report includes 32 specific recommendations for reducing unnecessary and counterproductive U.S. and Russian nuclear force levels unilaterally and bilaterally.

Full report: Trimming Nuclear Excess

This publication was made possible by a grant from the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

Air Force personnel perform New START Treaty inspection training on a Minuteman III ICBM payload section at Minot AFB in 2011. Nearly two years into the treaty, there have been few reductions of U.S. deployed strategic nuclear forces.

.
By Hans M. Kristensen

The U.S. State Department today released the full (unclassified) and detailed aggregate data categories for U.S. strategic nuclear forces as counted under the New START treaty. This is the forth batch of data published since the treaty entered into force in February 2011.

Although the new data shows a reduction compared with previous releases, a closer reading of the documents indicates that changes are due to adjustments of delivery vehicles in overhaul at any given time and elimination on so-called phantom platforms, that is aircraft that carry equipment that make them accountable under the treaty even though they are no longer assigned a nuclear mission. Actual reduction of deployed nuclear delivery vehicles has yet to occur.

The joint U.S.-Russian aggregate data and the full U.S. categories of data are released at different times and not all information is made readily available on the Internet. Therefore, a full compilation of the September data is made available here.

Overall U.S. Posture

The data attributes 1,722 warheads to 806 deployed ICBMs, SLBMs, and heavy bombers as of September 1, 2012. This is a reduction of 15 deployed warheads and 6 deployed delivery vehicles compared with the previous data set from March 2012.

A large number of non-deployed missiles and launchers that could be deployed are not attributed warheads.

The data shows that the United States will have to eliminate 234 launchers over the next six years to be in compliance with the treaty limit of 800 deployed and non-deployed launchers by 2018. Fifty-six of these will come from reducing the number of launch tubes per SSBN from 24 to 20, roughly 80 from stripping B-52Gs and nearly half of the B-52Hs of their nuclear capability, and destroying about 100 old ICBM silos.

The released data does not contain a breakdown of how the 1,722 deployed warheads are distributed across the three legs of the Triad. But because the bomber number is disclosed and each bomber counts as one warhead, and because 450-500 warheads remain on the ICBMs (downloading to one warhead per ICBM was scheduled to resume in 2012), it appears that the deployed SLBMs carry 1,104 to 1,154 warheads, or more than two-thirds of the total number of warheads counted by New START.

Just to remind readers: the New START numbers do not represent the total number of nuclear weapons in the U.S. arsenal – only about a third. The total military stockpile is just under 5,000 warheads, with several thousand additional retired (but still intact) warheads awaiting dismantlement. For an overview, see this article.

Ballistic Missile Submarines

The New START data shows that the United States as of September 1, 2012, had 239 Trident II SLBMs onboard its SSBN fleet, a reduction of three compared with March 2012. That is only enough to fill nine SSBNs to capacity, but it doesn’t reflect an actual reduction of SLBMs or SSBNs but a fluctuation in the number of SLBMs onboard SSBNs during overhaul. Each SSBN has 24 missile tubes for a maximum loadout of 288 missiles (48 tubes on two SSBNs in overhaul are not counted), but at the time of the New START count it appears that two or three of the 14 SSBNs were empty (including the two in refueling overhaul) and two or three were only partially loaded (in missile loadout).

It is widely assumed that 12 out of 14 SSBNs normally are deployable, but the various sets of aggregate data all indicate that the force ready for deployment at any given time may be closer to 10. This ratio can fluctuate significantly and in average 64 percent (8-9) of the SSBNs are at sea with roughly 920 warheads. Up to five of those subs are on alert with 120 missiles carrying an estimated 540 warheads – enough to obliterate every major city on the face of the earth.

Of the eight SSBNs based at Bangor (Kitsap) Submarine Base in Washington, the data indicates that three were out of commission on September 1, 2012: one had empty missile tubes (possibly because it was in dry dock) and two others were only partially loaded. This means that five SSBNs from the base were fully loaded and probably deployed with 120 Trident II D5 missiles carrying some 540 warheads at the time of the New START count.

For the six SSBNs based at Kings Bay Submarine Base in Georgia, the New START data shows that 103 missiles were counted as deployed on September 1, 2012. That number is enough to load four SSBNs, with two other SSBNs only partially loaded. The four deployed SSBNs probably carried 96 Trident II SLBMs with some 430 warheads.

Intercontinental Ballistic Missiles

The New START data shows that the United States deployed 449 Minuteman III ICBMs as of September 1, 2012, the same number that was deployed in March 2012. Most were at the three launch bases, but a significant number (321) were at maintenance and storage facilities in Utah. That included 58 MX Peacekeeper ICBMs retired in 2003-2005 but which have not been destroyed.

The New START data does not show how many warheads were loaded on the 449 deployed ICBMs. Downloading to single warhead loading was scheduled to begin in FY2012, but a completion has not been announced. The warhead number is 450-500. The 2010 NPR decided to “de-MIRV” the ICBM force, an unfortunately choice of words because the force will retain the capability to re-MIRV if necessary.

Heavy Bombers

The New START data shows that the U.S. Air Force possessed 141 B-2 and B-52 nuclear-capable heavy bombers as of September 1, 2012. Of these, 118 were counted as deployed, a reduction of four compared with March 2012. The data shows that only half of the B-2 stealth bombers are deployed.

Unfortunately the bomber data is misleading because it counts 30 retired B-52G bombers stored at Davis-Monthan AFB in Arizona as “deployed” at Minot AFB in North Dakota. The mischaracterization is the result of a counting rule in the treaty, which says that bombers can only be deployed at certain bases. As a result, the 30 retired B-52Gs are listed in the treaty as deployed at Minot AFB – even though there are no B-52Gs at that base. According to Air Force Global Strike Command, “There are no B-52Gs at Minot AFB, N.D…In accordance with accounting requirements, we have them assigned to Minot and as visiting Davis-Monthan.” The actual number of deployed heavy bombers should more accurately be listed as 88 B-2A and B-52H, with another 53 non-deployed (including the 30 at Davis Monthan AFB.

All of these bombers carry equipment that makes them accountable under New START, but only a portion of them are actually involved in the nuclear mission. Of the 20 B-2s and 91 B-52Hs in the Air Force inventory, 18 and 76, respectively, are nuclear-capable, but only 60 of those (16 B-2s and 44 B-52Hs) are thought to be nuclear tasked at any given time. None of the aircraft are loaded with nuclear weapons under normal circumstances but are attributed a fake count under New START of only one nuclear weapon per aircraft even though each B-2 and B-52H can carry up to 16 and 20 nuclear weapons, respectively. Roughly 1,000 nuclear bombs and cruise missiles are in storage for use by these bombers. Stripping excess B-52Hs and the remaining B-52Gs of their nuclear equipment will be necessary to get down to 60 counted nuclear bombers by 2018.

Conclusions and Recommendations

The New START data released by the State Department continues the decision made last year to release the full U.S. unclassified aggregate numbers, an important policy that benefits international nuclear transparency and counters misunderstandings and rumors.

The latest data set shows that the U.S. reduction of deployed strategic nuclear forces over the past six months has been very modest: 6 delivery vehicles and 15 warheads. The reduction is so modest that it probably reflects fluctuations in the number of deployed weapon systems in overhaul at any given time. Indeed, while there have been some reductions of non-deployed and retired weapon systems, there is no indication from the new data that the United States has yet begun to reduce its deployed strategic nuclear forces under the New START treaty.

Those reductions will come slowly over the next five-six years to meet the treaty limits of 1,550 deployed strategic warheads and 800 deployed and non-deployed strategic delivery vehicles by February 2018. But almost two years after the New START treaty entered into force, it is clear that the Pentagon is not in a hurry to implement it.

This publication was made possible by a grant from the Ploughshares Fund. The statements made and views expressed are solely the responsibility of the author.

Linton Brooks and I discussed nuclear modernization at a November 13 panel organized by BASIC.

.
By Hans M. Kristensen

BASIC invited me to discuss nuclear weapons modernization with Linton Brooks at a Strategic Dialogue panel held at the Capitol Hill Club on November 13, 2012. We’re still waiting for the official transcript, but BASIC has a rough recording and my prepared remarks are available here. [Update: all material, including transcript with questions/answers, is available from BASIC].

In my talk, I argued that the Obama administration’s nuclear arms control profile is at risk of being overshadowed by extensive nuclear weapons modernization plans, and that the approach must be adjusted to ensure that efforts to reduce the numbers and role of nuclear weapons and put and end to Cold War thinking are clearly visible as being the priority of U.S. nuclear policy.

The administration has nearly completed a strategic review of nuclear targeting and alert requirements to identify additional reductions of nuclear forces. Release of the findings was delayed by the election, but the administration now needs to use the review to reinvigorate the nuclear arms reduction agenda that has slowed with the slow implementation of the modest New START Treaty and the disappointing “nuclear status quo” decision of the NATO Chicago Summit.