Biden warns world would face ‘Armageddon’ if Putin uses a tactical nuclear weapon in Ukraine

Joe Biden has warned that the world is on the brink of a nuclear catastrophe Photograph: Lev Radin/Pacific Press/REX/Shutterstock

Joe Biden has warned the world could face “Armageddon” if Vladimir Putin uses a tactical nuclear weapon to try to win the war in Ukraine.

The US president made his most outspoken remarks to date about the threat of nuclear war, at a Democratic fundraiser in New York, saying it was the closest the world had come to nuclear catastrophe for sixty years.