Joe Biden issued forceful warnings to Russia on Sunday.
The US President told CBS’ 60 Minutes program that if Vladimir Putin used nuclear or other non-conventional weapons against Ukraine the US response would be “consequential”.
When asked what he would tell Putin if the Russian leader was mulling such a move, he said: “Don’t. Don’t. Don’t.”
Mr Biden praised the Ukrainians for their gritty fight against the huge Russian invasion force.
Asked how to define victory for Kyiv, he said “winning the war in Ukraine is to get Russia out of Ukraine completely”.
But Mr Biden said that given the scale of human suffering and destruction inflicted in resisting the Russian onslaught, “it’s awful hard to count that as winning”.