Sir Keir Starmer today warned Donald Trump that Vladimir Putin cannot be trusted 'as far as you can throw him'.
The US President is set to meet the Russian leader in Alaska later this week for peace talks over Ukraine.
Mr Trump has signalled he thinks Ukraine might need to cede territory in order to end the three year-long conflict.
But the US President is under pressure to consult with Kyiv and other European capitals prior to the talks on what he might offer Mr Putin.
The Prime Minister's official spokesman on Monday reiterated the UK's support for Ukraine and Mr Trump's push for peace, but not Moscow.
