Russian jets harass US drone aircraft over Syria

WASHINGTON -- Russian fighter jets flew dangerously close to several U.S. drone aircraft over Syria again Thursday, setting off flares and forcing the MQ-9 Reapers to take evasive maneuvers, the Air Force said.

It was the second time in 24 hours Russia has harassed U.S. drones there.

"We urge Russian forces in Syria to cease this reckless behavior and adhere to the standards of behavior expected of a professional air force so we can resume our focus on the enduring defeat of ISIS," Lt. Gen. Alex Grynkewich, head of U.S. Air Forces Central Command, said in a statement.

Col. Michael Andrews, Air Forces Central Command spokesman, said "the Russian harassment, including close fly-bys, by one SU-34 and one SU-35 and deploying flares directly into the MQ-9, lasted almost an hour. So it wasn't a quick fly-by, but much more of a sustained and unprofessional interaction."

Army Gen. Erik Kurilla, head of U.S. Central Command, said in a statement that Russia's violation of ongoing efforts to clear the airspace over Syria "increases the risk of escalation or miscalculation."

About 900 U.S. forces are deployed to Syria to work with the Kurdish-led Syrian Democratic Forces battling the Islamic State militants there. No other details about the drone operation were provided.