Remember this event?
http://en.wikipedia.org/wiki/U.S._bombing_of_the_Chinese_embassy_in_Belgrade
In my opinion ISIS is a Turk/Saudi/State operation. The original intent was to deny Iran its Syrian window onto the Mediterranean Sea. If it coincidentally increased pressure on Israel, that was a bonus.
I don’t think any of the partners cared about the foray into Iraq. Destabilizing a Shia government in Baghdad didn’t upset them. It is only the really bad PR they are getting that has caused them to want to try and “manage” ISIS. But I’ll be surprised if their response isn’t calibrated to increase the pressure on Assad, the original goal. They already used the ISIS crisis to remove Maliki in Baghdad. The end goal is still a government in Damascus that is friendly to the Turks and the Saudis. And preferably more hostile to Israel.