New and updated reports from the Congressional Research Service that have been withheld from broad public distribution include the following. U.S. Strategic Nuclear Forces: Background, Developments, and Issues, updated November 3, 2015 The New START Treaty: Central Limits and Key Provisions, updated November 3, 2015 Iran Sanctions, updated November 3, 2015 Tropical Storm? The Supreme […]
By Hans M. Kristensen General James Cartwright, the former commander of U.S. Strategic Command and former Vice Chairman of the Joint Chiefs of Staff, confirmed in an interview with PBS Newshour that the increased accuracy of the new guided B61-12 nuclear bomb could make the weapon “more useable” to the president or national-security making process. […]
By Hans M. Kristensen and Robert S. Norris In our latest FAS Nuclear Notebook we estimate that Pakistan now has 110-130 warheads in its nuclear arsenal. This is an increase of about 20 warheads from the 90-110-warhead level we estimated in our previous Pakistani Notebook in 2011. The Notebook is published as Pakistan’s Prime Minister Nawaz […]
By Hans M. Kristensen [Updated January 26, 2016] In an op-ed in the Washington Post, William Perry and Andy Weber last week called for canceling the Air Force’s new nuclear air-launched cruise missile. The op-ed challenged what many see as an important component of the modernization of the U.S. nuclear triad of strategic weapons and […]
Mordechai Vanunu, who revealed aspects of Israel’s nuclear weapons program to the press three decades ago and served a lengthy prison term as a result, is again entangled with Israeli legal authorities over the contents of a recent TV interview. See “Nuclear Whistle-blower Vanunu Arrested Over Channel 2 Interview,” Haaretz, September 10. Vanunu should be […]
In response to public inquiries about the location of nuclear weapons, Department of Defense officials are normally supposed to respond: “It is U.S. policy to neither confirm nor deny the presence or absence of nuclear weapons at any general or specific location.” Remarkably, “This response must be provided even when such location is thought to […]
This week the Department of Energy posted the first declassification guidance for nuclear weapons-related information, known as the Tolman Committee reports, prepared in 1945-46. The Tolman reports were an early and influential effort to conceptualize the role of declassification of atomic energy information and the procedures for implementing it. Though the reports themselves were declassified in the […]
By Hans M. Kristensen The number of U.S. strategic warheads counted as “deployed” under the New START Treaty has dropped below the treaty’s limit of 1,550 warheads for the first time since the treaty entered into force in February 2011 – a reduction of 263 warheads over four and a half years. Russia, by contrast, […]
The arrival of the Borei SSBNs marks the first significant upgrade of the Russian Pacific Fleet SSBN force in more than three decades.
Security upgrades underway at U.S. Air Force bases in Europe indicate that nuclear weapons deployed in Europe have been stored under unsafe conditions for more than two decades. Commercial satellite images show work underway at Incirlik Air Base in Turkey and Aviano Air Base in Italy. The upgrades are intended to increase the physical protection […]
The Department of Energy issued twenty “declassification determinations” between April 2011 and March 2015 to remove certain specified categories of nuclear weapons-related information from classification controls. “The fact that a mass of 52.5 kg of U-235 is sufficient for a gun-assembled weapon” was formally declassified in a written decision dated August 19, 2014. The “total […]
Updated below In 2013, the Academy of Military Sciences of the People’s Liberation Army of China issued a revised edition of its authoritative, influential publication “The Science of Military Strategy” (SMS) for the first time since 2001. “Each new edition of the SMS is closely scrutinized by China hands in the West for the valuable […]