The Chinese Type 093B is classified by the U.S. military as a guided-missile nuclear-powered attack submarine.

Leader Kim Jong Un pledged to pursue "sustained countermeasures," citing security ties between the U.S. and its regional allies.

The $600 million machine is already online and operational at the Lawrence Livermore National Laboratory in California.

You may have never heard of the National Nuclear Security Administration, but its work is crucial to your safety—and to that ...

The U.S. tested nuclear weapons until the early 1990s. Since then, scientists have been using supercomputers and experiments ...

North Korea said on Saturday its nuclear weapons are not meant for negotiations but are intended for combat use against ...

North Korean leader Kim Jong Un called for "indefinitely" strengthening his regime's nuclear weapons capacity, state media ...

Iran must have atomic bombs to survive, supreme leader told in extraordinary intervention by regime’s military leaders ...

The top leader of the Democratic People's Republic of Korea (DPRK) inspected a nuclear-material production base and the ...

The Treasury sanctions are directed at more than a dozen people and companies based in China, India and the United Arab ...