"Footage from private broadcaster Haberturk TV showed a warplane going down in flames in a woodland area, a long plume of smoke trailing behind it, Reuters reports. The plane went down in area known by Turks as "Turkmen Mountain" in northern Syria near the Turkish border, Haberturk said. Separate footage from Turkey's Anadolu Agency showed two pilots parachuting out of the jet before it crashed."
Russian Defense Ministry confirmed the plane was russian but said it did not violate Turkey's airspace and can prove it.
This is a very dangerous development and - if seen by Russia as an act of war - could lead to major armed conflict between a NATO member and the Russian Federation.