US says Russia developing 'doomsday' autonomous nuclear torpedo, as Trump administration announces more aggressive stance to Moscow

The Pentagon has warned Russia is developing a “nuclear-armed, undersea autonomous torpedo”, as Donald Trump’s administration outlined a more aggressive stance towards Moscow. The US defence department said Russia has been constructing a “new intercontinental, nuclear-armed, nuclear-powered” weapon, in a policy statement known as the Nuclear Posture Review (NPR). The Trump administration announced it would continue much of President Barack Obama’s nuclear weapons policies, but would take a harder line towards Russia.