Is Turkey collaborating with the Islamic State (ISIS)? Allegations range from military cooperation and weapons transfers to logistical support, financial assistance, and the provision of medical services. It is also alleged that Turkey turned a blind eye to ISIS attacks against Kobani.The author then continues in the research article to link to considerable evidence that answers a resounding "yes" to the above question. This solid piece of research together with numerous others (all you need to do is enter "ISIS" into one of my search boxes) adds up to an overwhelming conclusion that the US Empire and its vassal states have been mounting years of lie-filled propaganda barrages to justify their overthrow of the legitimate government of Syria.
Also, see the latest evidence of Israeli terrorist contribution to the destabilization of Syria provided by American geopolitical analyst F. William Engdahl based in Germany entitled "Israeli Colonel Caught with IS Pants Down" from New Eastern Outlook.