Vladimir Putin
It comes after the Republican presidential nominee vowed to end Russia's war in Ukraine if elected.
The Russian authoritarian leader appears to have snubbed the former US president.
“Ladies and gentlemen, President Putin," Biden said before correcting himself.
A bit of head-scratcher, this one.
"Someone needs to get the sack," the party leader fumed.
The Reform UK leader has previously accused the West of "provoking" the Russian leader.
The Reform UK leader has previously spoken of his "admiration" for the Russian leader.
Was it excessive politeness or political symbolism?
Coming from two authoritarian leaders, that's quite the promise.
The Russian president's peace proposal was written off almost immediately by most in the West.