![](https://fas.org/wp-content/uploads/2023/04/www.fas_.org-programs-ssp-nukes-publications1-IssueBrief_B61-12.pdf.png)
The B61 Life-Extension Program: Increasing NATO Nuclear Capability and Precision Low-Yield Strikes
A modified U.S. nuclear bomb currently under design will have improved military capabilities compared with older weapons and increase the targeting capability of NATO’s nuclear arsenal. The B61-12, the product of a planned 30-year life extension and consolidation of four existing versions of the B61 into one, will be equipped with a new guidance system to increase its accuracy. As a result, the U.S. non-strategic nuclear bombs currently deployed in five European countries will return to Europe as a life-extended version in 2018 with an enhanced capability targets.
The Federation of American Scientists applauds the United States for declassifying the number of nuclear warheads in its military stockpile and the number of retired and dismantled warheads.
North Korea may have produced enough fissile material to build up to 90 nuclear warheads.
Secretary Austin’s likely certification of the Sentinel program should be open to public interrogation, and Congress must thoroughly examine whether every requirement is met before allowing the program to continue.
Researchers have many questions about the modernization of Pakistan’s nuclear-capable aircraft and associated air-launched cruise missiles.