Joe Biden warns Putin not to use chemical or nuclear weapons in Ukraine.

The US President said doing so ‘would change the face of war unlike anything since World War II’.

During an interview in the White House, CBS’ 60 Minutes correspondent Scott Pelley said Putin was ‘becoming embarrassed and pushed into a corner’ following a sting of military defeats.

Asked what he would say to his Russian counterpart were he to consider deploying weapons of mass destruction, Mr Biden replied: ‘Don’t, don’t, don’t.’