How Dubya's invasion of Iraq paved the way for PISSI.

I think it is too strong to say that the US "created" PISSI. There were several steps from the Iraqi resistance of 10 years ago to PISSI, so the claim that PISSI was inevitable is going too far.

For instance, without the Tunisian revolution in 2011, and the famine in Syria in the preceding years, Syria might still be firmly under the rule of Assad.