President Trump has argued the U.S. should test nuclear weapons because other countries are doing it. But scientific data suggest they’re not.

Emerging from the unyielding cold of the Arctic, Russia has successfully tested its most audacious weapon yet: the ...

A Pakistani official told CBS News that the country "will not be the first to resume nuclear tests" in response to President ...

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

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

Trump’s command risks a global arms race while the Doomsday clock ticks closer than ever to midnight, experts say ...

President Donald Trump appears to have ordered a return to nuclear testing after decades of uneasy but effective treaties ...

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

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