British Prime Minister Keir Starmer (2nd L), Ukrainian President Volodymyr Zelensky (2nd R), French President Emmanuel Macron (1st R) and German Chancellor Friedrich Merz make remarks as they meet in 10 Downing Street in London, Britain, Dec. 8, 2025. [Photo/Xinhua]

British Prime Minister Keir Starmer met with Ukrainian President Volodymyr Zelensky, French President Emmanuel Macron and German Chancellor Friedrich Merz on Monday to discuss Ukraine peace.

According to a British government release after the meeting, the leaders underscored the need for a "just and lasting peace in Ukraine," which includes security guarantees.

Merz said before the meeting that he is "skeptical of some of the details which we are seeing in documents coming from the U.S. side -- but we have to talk about it," British media reported.

On Saturday, U.S. and Ukrainian delegations concluded three-day talks in Miami, Florida, focusing on territorial issues and U.S. security guarantees for Ukraine, U.S. online media outlet Axios reported.

Zelensky on Sunday depicted the peace talks with the U.S. as "constructive," but "not easy."