U.S. expects agreement with Russia soon on Syria air safety

BOSTON/WASHINGTON (Reuters) - The United States expects an agreement with Russia's military soon on air safety protocols in the skies above Syria, U.S. Defense Secretary Ash Carter said on Tuesday, as the former Cold War foes seek to avoid a clash during rival bombing campaigns.

Russia's entry into Syria's civil war has stoked concerns about an accidental mishap between U.S. and Russia jets. The Pentagon has already cited cases in which Russia aircraft came within miles of piloted U.S. fighters jets and drones.