LONDON - British Prime Minister Keir Starmer on Dec 2 said stepping up support for Ukraine was essential to put the country in the strongest position for peace talks as he conceded in the clearest terms there could be a negotiated end to the war.

He stressed the importance of continued Western support to Ukraine and warned a Russian victory in Ukraine would threaten Europe’s security, stability and prosperity, particularly because it could embolden Russia’s allies.

“We must continue to back Ukraine and do what it takes to support their self-defence for as long as it takes,” he said in a speech in London’s historic financial district.

“To put Ukraine in the strongest possible position for negotiations so they can secure a just and lasting peace on their terms that guarantees their security, independence - and right to choose their own future.”

Mr Starmer’s comments come at crucial moment in the war with Russia advancing at its fastest rate since 2022 and US President-elect Donald Trump - who is deeply sceptical of US support for Ukraine - promising to end the war quickly after he is inaugurated on Jan 20.

Britain has been one of Ukraine’s most vocal supporters since the start of the invasion by Russia in 2022 and was the first country to supply more sophisticated weapons to Ukraine, including battle tanks and long-range cruise missiles.

This was the clearest language, Mr Starmer, who was elected Britain’s prime minister in July, has used about the wa...