U.S. President Barack Obama (L) and Russian President Vladimir Putin (Reuters)
Russia and the United States have agreed on the need to improve coordination to avert incidents while conducting military operations in Syria, the Russian defence ministry said on Sunday.
Military officials from the two countries reached the agreement at a video conference, the ministry said.
On Saturday the Pentagon said it had questioned Moscow over Russian air strikes conducted against U.S.-backed Syrian opposition forces last week. The Pentagon said Moscow had failed to heed U.S. warnings.