The Nuclear Information Project at the Federation of American Scientists estimated that the U.S. had about 3,700 warheads in ...

The Long Range Standoff is a nuclear cruise missile with the range and ability to penetrate heavily defended airspace.

Trump's announcement breaks with more than three decades of policy. The last time the United States tested a nuclear weapon ...

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.

President Trump said Wednesday that he has instructed the Defense Department to immediately begin testing U.S. nuclear ...

The president said he was instructing the Pentagon to test the U.S. nuclear arsenal on an “equal basis” with other nuclear ...

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

All of the nine nuclear-armed nations are investing huge sums in new weapons. And the numbers of nuclear weapons “available ...

Touting new weapons tests, Moscow signals to Washington that it must contend with the Kremlin’s power and negotiate.