Trump's comments last month sparked fears of a new nuclear arms race and concerns major powers would restart full testing.

Putin orders nuclear test preparations after Trump announces U.S. will resume testing. Russia vows proportionate response to ...

Questions have arisen after Russian President Vladimir Putin said his country tested two nuclear-capable weapons this week.

Russia urged the United States on Friday to clarify what it called contradictory signals about a resumption of nuclear ...

Russian Foreign Minister Sergei Lavrov has stated that Moscow has not yet received any clarification since US President ...

Russian Defense Minister Andrei Belousov said on Nov. 5 that Russia should begin immediate preparations to conduct full-scale ...

President Trump wants to restart domestic testing to keep up with adversaries like China and Russia, but nuclear experts ...

Russian Foreign Minister Sergei Lavrov said on Saturday that work is under way on President Vladimir Putin's order to prepare ...

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 ...

The comments follow Russian defense minister Andrey Belousov announcing that Moscow should “immediately” prepare for ...

President Trump has ordered the military to “immediately” begin testing nuclear weapons for the first time in more than three ...