Russian President Vladimir Putin apologised on Saturday over the crash of an Azerbaijani Airlines plane, though he stopped short of accepting that it might..

While some in Azerbaijan - a Russian ally - have called for an apology from Moscow, Kazakhstan, one of Moscow's main allies, has not pointed the finger at Russia. Russian officials had earlier said that Ukrainian drones were attacking Grozny that day.

Two U.S. military officials told NBC News that they had intelligence indicating that Russians may have misidentified the plane and shot it down.