“Turkish armed forces shot down a Syrian plane on Sunday that Ankara said had crossed into its air space in an area where Syrian rebels have been battling President Bashar al-Assad’s forces for control of a border crossing. ‘A Syrian plane violated our airspace,’ Prime Minister Tayyip Erdogan told an election rally in northwest Turkey. ‘Our F-16s took off and hit this plane. Why? Because if you violate my airspace, our slap after this will be hard.'”
Source: Turkey shoots down Syrian plane it says violated air space | Reuters