A Turkish military statement said the plane violated Turkish airspace in Hatay province and was warned “10 times in five minutes”.
http://www.aljazeera.com/news/2015/11/turkey-shoots-warplane-syria-border-151124081519290.html
The areas of operations need to be made clearer. Putin, however, feels he owns the entire battle space based on the fellowship of tyrants. Only after ISIS took out a Russian civilian plane did he show any interest in taking on ISIS.