Historical

[Jazzman]

Historical Persepctive:

Russia and Turkey have been at it for centuries: Crimean War, The Russian-Turkish War, WWI, control over the Bosphorus (more latterly Crimea), the Kurd factor, current split of alliance (Assad vs Arab states).
http://www.independent.co.uk/voices/a-long-history-of-tension-underlies-turkeys-downing-of-russian-jet-a6747516.html

Personality Cults:

Two nutters (Putin and Erdojan) in the middle of a complex regional conflict is a recipe for disaster. How is it that people like this so easily find their way into power able to do what they want while f**king it up for the rest of us.
http://www.theguardian.com/world/2015/nov/26/russia-turkey-jet-mark-galeotti