Real or not, reported Kremlin drone attack unsettles Russia

A 'No fly zone' sign is seen on Wednesday at the empty Red Square closed for Victory Parade preparation, next to the Moscow Kremlin, in Moscow, Russia. (AP Photo/Alexander Zemlianichenko)

TALLINN, Estonia — As Russian officials tell it, two Ukrainian drones flew into the very heart of Moscow under the cover of darkness, reaching the Kremlin before they were shot down at the last minute.