keir starmer
His friend Donald Trump's approval ratings have also fallen - including among Reform UK voters.
The vice-president has faced a wave of criticism over the comments.
MPs from across the party are pushing back against the controversial move.
'Time To Make Things Right': Zelenskyy Praises Trump's 'Strong Leadership' As He Sets Out Peace Plan
The Ukrainian president set out his terms for ending the war with Russia.
The prime minister told MPs yesterday that America had no plans to do so.
The Reform UK leader has spoken of his admiration for the Russian leader in the past.
Keir Starmer seems to be stepping up to the plate.
Could this end up being a "defining moment" in his premiership?
The prime minister has suggested deploying European peacekeeping troops to the war-torn country.
"That's not a plan that we currently recognise," Luke Pollard said.