European leaders met in London to formulate a plan to help end the war in Ukraine. But even potential peacekeepers face political and economic hurdles.

Following the public clash between Trump and Zelensky, the U.K. and France are trying to broker a compromise solution to end the war.

European leaders sought to assemble what Britain called a “coalition of the willing” to secure Ukraine after any US-brokered ceasefire, as they gathered in London to coordinate defense spending hikes amid concerns of an American pullback.