WASHINGTON (Reuters) -- U.S. President Donald Trump on Friday announced on social media that there would be a three-day ceasefire in the war between Russia and Ukraine from May 9 until May 11 to mark the end of World War Two for the Russians.Trump had said after a phone call with Putin on April 29 that a temporary ceasefire was in the works. Putin announced a similar truce last year that lasted three days but was not agreed with Kyiv.Trump said in a Truth Social post that the pause will include a suspension of all kinetic activity, and also a...