In response to President Trump’s threat to resume nuclear testing, the Kremlin said Thursday that Russia had not tested nuclear weapons recently but would if the United States did.

President Donald Trump reiterated Friday that he wants testing of US nuclear weapons, but again failed to clarify whether he meant live explosions in an order that has provoked global tension and conf...

A Japanese atomic bomb survivors group that won the Nobel Peace Prize strongly condemned US President Donald Trump's order for the Defence Department to “immediately” start testing nuclear weapons.