Escalating an arms race that could bring about Armageddon is only part of the reason Trump's push to resume testing is ...

President Vladimir Putin says Russia has adhered to a ban on nuclear test explosions after President Trump claimed Moscow is ...

Andrey Belousov, Russia's defense minister, made the announcement after President Donald Trump said the US would start ...

The recent nuclear tensions come after Russia tested a so-called doomsday device—the nuclear-powered, nuclear-armed Poseidon ...

As many as 550,000 U.S. military service members were exposed to radiation or participated in nuclear weapons tests that ...

Vladimir Putin ordered plans to restart Russia’s nuclear tests after Donald Trump said last week that America would carry out ...

Energy Secretary Chris Wright on Sunday clarified that the new nuclear weapons tests ordered by President Donald Trump will ...

Dmitri S. Peskov, a Kremlin spokesman, told Russian news agencies that recent drone and missile tests were not nuclear ...

U.S. President Donald Trump ordered the U.S. military on Thursday to immediately resume testing nuclear weapons after a gap ...

Experts agreed if the U.S. resumed full nuclear weapons tests, other nations would do the same — giving them a chance to catch up on nuclear knowledge.

Energy Secretary says administration will tests nuclear weapons ‘systems’ without detonating devices — for now ...

The test comes days after President Vladimir V. Putin announced the previous trial of another Russian nuclear weapon.