Keep in mind that Turkey does not respect Syria’s borders, as they have been supporting various groups operating there, including the Turkmen rebels dancing over the Russian’s body chanting Allah Akbar. Turkey also does not protect its own borders against all the hordes that pass through Turkey and get shunted along to Greece and on into Europe. Nor does Turkey prevent ISIS recruits from passing into and then out of Turkey on the way to Syria. So to me it rings a little hollow for Turkey to get so excited over a Russian jet passing over a tiny sliver of Turkish territory. Is Russia the only foreign air force operating over Syria that actually has the permission of the Syrian government?