Ukraine and Eastern Europe

Secretary of State Marco Rubio warned on Tuesday that the United States would give up on mediation unless Russia and Ukraine put forward "concrete proposals," as US patience wanes on an early priority for Donald Trump. The US president had vowed to end the war in his first 24 hours back in the White House but, as Trump celebrates 100 days in office, Rubio has suggested the administration could soon turn attention to other issues.

Russian President Vladimir Putin has ordered a surprise three-day ceasefire from May 8-10, coinciding with Moscow's World War II Victory Day commemorations, the Kremlin said on Monday. Moscow said it expected Kyiv to issue a similar order, and that it stood ready to respond to any violations of the possible halt in fighting.  Putin made a similar order to stop combat over Easter, a truce that both sides accused the other of violating hundreds of times, but did lead to a temporary reduction in fighting.