After weeks of dancing around the issue, the Obama administration has expressed concern about 'heightened military activity' by Russia in Syria.
Russia's War Against Ukraine
New York Post: How Putin is turning the Syrian coast into another Crimea
A rebel fighter fires heavy artillery during clashes with government forces and pro-regime shabiha militiamen in the outskirts of Syria's northwestern Idlib province on September 18, 2015. AFP PHOTO / OMAR HAJ KADHOUR