U.S. calls Russian claim that Washington was behind drone attack 'ludicrous'

WASHINGTON, May 4 (Reuters) - The United States dismissed Russia's allegation on Thursday that Washington was behind what it said was a drone attack on the Kremlin, saying Moscow's assertion was a lie. "Obviously it's a ludicrous claim," White House national security spokesman John Kirby said hours after Russia blamed the United States for what it called an attack aimed at killing President Vladimir Putin. "The United States has nothing to do with it. We don't even know exactly what happened here, but I can assure you the United States...