[jokoon]

Basically you can rewind things at a certain prison where many islamist insurgent were kept, including al baghdadi. This prison was managed by the Iraqi or I don't remember who.

To say that the invasion of Iraq did not fuel the escalation in Syria is a little naive.

There is an endless debate between keeping Saddam Hussein in power and letting Iraq slowly reconstruct itself, and removing him and letting all the bad stuff loose.