I pretty much agree with you but imperialism from countries like Britain, France and the United States (even Israel) does play a good part as it aggitates people in the Middle East and elsewhere. Imperialists were never wanted there in the first place but go there to this day by manipulating groups against each other and starting wars often because of their oil and other valuable resources. If you go back to when the Ottoman Empire fell, the Middle East was completely divided with no consideration of the needs of local people. This part is still a big issue and its no wonder stability is so bad there when nations were invented out of thin air. The Kurds, a people with no nation still are literally the strongest in this mess the middle east is currently in. An Iraqi people doesn't really exist.

You say about the Wahhabi movement and the odd thing is despite their evil believes is that the western world worked with them when it see fit and then disposed of them afterwards. 

The Saudi Royal Family are Wahhabi and to be honest are probably quite comfortable with alot of ISIS action. Beheadings and stonings are still extremely common punishments in Saudi Arabia even though they are an ally which goes back at least 100 years when the Saudis decided to do what the British Empire told them. 

Iran may be hold wahhadi too as they are a very conservative and authoritarian country too. Although Iran was never like this until 1979 Islamic Revolution which was a reaction to a CIA backed Coup in 1953, that overthrew a democratically elected government due to the west disapproving of the Iranian nationalisation of their own oil. In the 1950s, Iran was secular, tolerant and a fairly liberal society. Afghanistan was similar and now look at the state of it.

Imperial interests didn't care about that though and destroyed those societies. I think all this interference radicalised people especially when wars started kicking off let alone the unwanted and unjusted coups that took place. Our problem is we backed some dodgy people in the cold war and we underestimated them big time. Just like how we backed Al Qaeda in the 1980s and now they are all over the place and creating even more extreme groups like ISIS. Ideas are a big part of the problem but they are nothing on their own. 

I just glad we didn't overthrow Assad, that would of been a mess

Sorry for the long post but all i'm saying is these extreme muslims would of been nothing but a small frustrated group of society almost like the National Front had it not been backed by a great power like the United States