The United States maintains one of the most sophisticated and varied nuclear arsenals in the world, with weapons designed for ...

Although initially estimated in 1959 to generate a blast equivalent to six megatons of TNT, the device yielded a 15 megaton explosion—allegedly the most powerful nuclear weapon ever detonated by ...

B61-12 nuclear warhead is the latest modification to the B61 family of gravity bombs, which are deployed from U.S. Air Force ...

Putin has been steadily expanding his arsenal of tactical nuclear missiles. Now experts are calling for the US and Nato to do the same Some of the most abiding ... of nuclear weapons each side ...

Lou BENOIST/AFP/AFP France on Saturday connected its most powerful nuclear power reactor to the national electricity grid in what leaders hailed as a landmark moment despite years of delays ...

Ms. Fihn is the director of Lex International Fund and a former executive director of the Nobel Peace Prize-winning International Campaign to Abolish Nuclear Weapons. It’s easy to feel ...

France on Saturday connected its most powerful nuclear power reactor to the national electricity grid in what leaders hailed as a landmark moment despite years of delays and technical setbacks. The ...

the most powerful means of defense—that role falls to programs that secure nuclear weapons and materials at the source. But assessed in the context of a much broader system aimed at reducing the ...

China has overcome a significant technical hurdle in the development of a compact yet extremely powerful directed energy weapon ... an intensity comparable to a nuclear explosion, which can ...