British Prime Minister Keir Starmer said on Sunday European leaders had agreed to draw up a Ukraine peace plan to take to the United States, a vital step for Washington to be able to offer security guarantees Kyiv says are vital to deter Russia. At a summit in London just two days after Volodymyr Zelenskiy clashed with U.S. President Donald Trump and cut short a visit to Washington, world leaders offered a strong show of support to the Ukrainian president and promised to do more to help his nation. European leaders agreed they must spend more on defence to show...