Starmer and Zelensky. Prime Minister Sir Keir Starmer welcomes Ukrainian President Volodymyr Zelensky to 10 Downing Street, London for a bilateral meeting to discuss the UK's support for Ukraine, and how we ensure a just and lasting peace that secures Ukraine's future sovereignty and security, backed up by strong security guarantees. March 1, 2025 in London England. Capital Pictures / MediaPunch/MediaPunch/IPx/Photo Courtesy

U.K. Prime Minister Keir Starmer said Britain and France agreed to work with Ukraine on a ceasefire plan to present to the United States, following Ukrainian President Volodymyr Zelensky's Oval Office clash with U.S. President Donald Trump. Speaking to the BBC on Sunday, Starmer expressed confidence that Trump seeks a lasting peace in Ukraine.

He reiterated that American security guarantees would be essential to ensuring its success. Later today, Starmer will host a summit of European leaders in London to discuss the ongoing situation in Ukraine.

The summit has taken on heightened significance in the wake of Trump's remarkable rebuke of Zelensky at the White House on Friday, criticizing him for a lack of gratitude toward U.S. support.

"There's a real problem for European leaders to pick up the pieces and try and move forward," former British national security adviser Peter Ricketts told BBC radio on Saturday. "It's going to be a damage limitation exercise. It's going to have to be an exercise in where do we go from here?" This is a breaking news story and will be updated. By Daniel Orton Newsweek World/ Miami Herald