“Because of other countries’ testing programs, I have instructed the Department of War to start testing our Nuclear Weapons on an equal basis,” Trump said in a Truth Social post.

US President Donald Trump has said the United States will restart nuclear weapons testing days after Russia announced trials of a nuclear-powered underwater drone and nuclear-capable cruise missile.

As Mr Trump has toughened both his rhetoric and his stance on Russia, Mr Putin has publicly flexed his nuclear muscles with the test of a new Burevestnik cruise missile on October 21 and nuclear laun...