The only reason this incident will NOT result in WW III is that I am fully confident that when push comes to shove, Barack Obama will NOT live up to our treaty obligations to NATO.
Erdogan is nut job, shooting down a Russian plane and then running to hide behind NATO.... Ask 30 million Kurds who is a bigger despot, Bashar Assad Or Erdogan
Turkish jets go into Syria and Iraq regularly to attack the Kurds
Maybe it won't be so easy for them to do so from now on
However, a NATO "obligated" response in the region could give cover to help his friends in ISIS. Defending Turkey against Russia puts us against ISIS's biggest threat today.
IIRC, our obligation under NATO does not include aggression by one of the member states upon a non-member state who does not attack first.................