U.K. Prime Minister Keir Starmer told world leaders on Sunday that they need to step up to a “once in a generation moment” for the security of Europe, at a summit in London to discuss ending Russia's war in Ukraine.

Starmer said he's focused on being a bridge to restore peace talks and he used the collapse of those talks as an opportunity to re-engage with Trump and Zelenskyy and French President Emmanuel Macron

The UK, France and Ukraine will work on a ceasefire plan to present to the United States, the prime minister has said, in the wake of Volodymyr Zelenskyy's White House clash with Donald Trump.