The shooting down of a Russian Air Force Sukhoi Su-24 jet by Turkish F-16 fighters after it reportedly violated Turkish airspace is a dangerous escalation in the context of Russia's continuing confrontation with NATO in Eastern Europe and Syria.
However, it should not come as much of a surprise.
Turkish authorities claim that the Su-24 fighter bomber ignored repeated warnings over the course of five minutes on Tuesday and was then shot down after violating Turkish airspace near Yayladagi, Hatay.
Russia claims that the Su-24 did not cross the Syria-Turkey border and was, therefore, illegally attacked