@oralloy,
oralloy wrote: "The Iraqi Sunnis were happy to be done with al-Qa'ida in Iraq once we gave them a better option. They only welcomed them back under the name Islamic State after we had left Iraq and the Shia had set about exterminating them."
There's something to this, but though the Shiites used various types of repression including death squads, there was no campaign of extermination.
Don't forget that the Sunni minority was used to having the political power and the perks that came with it. Once the shoe was on the other foot and they became the marginalized step-children, promises to restore Sunnis to their "rightful place" which played on preexisting religious biases became attractive.
Another important difference between al Qaeda in Iraq and ISIS is the level of services, not only for those who join but sometimes for those who play ball.
The IS government infrastructure seems better developed in Syria than in Iraq, but in a country where poverty is endemic, price controls on basic goods and subsidies for food, housing, and healthcare are appealing. ISIS also inculcates a legal system which, for cooperative Sunnis who aren't enemies of the state, is a lot less corrupt by Middle East standards than some. This must be weighed against strictly enforced laws banning the use of tobacco and alcohol and fraternization between the sexes.
As for western style political freedoms, in a country like Iraq where Sunnis lived decently under Sadaam Hussein as long as they stayed out of politics and did what they were told, I'm not sure they're looking for that.
Some insider insights from a Syrian ISIS defector:
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“I rented a house, which was paid for by ISIS,” Abu Khaled told me. “It cost $50 per month. They paid for the house, the electricity. Plus, I was married, so I got an additional $50 per month for my wife. If you have kids, you get $35 for each. If you have parents, they pay $50 for each parent. This is a welfare state.”
“This is why a lot of people are joining,” said Abu Khaled. “I knew a mason who worked construction. He used to get 1,000 lira per day. That’s nothing. Now he’s joined ISIS and gets 35,000 lira—$100 for himself, $50 for his wife, $35 for his kids. He makes $600 to $700 per month. He gave up masonry. He’s just a fighter now, but he joined for the income.”
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For all its means of self-enrichment, ISIS hasn’t forgotten about the little guy. It has constructed a social safety net for those it rules in its Islamic welfare state, a linchpin of which is Baghdadi’s own Affordable Care Act.
ISIS members are entitled to free medical treatment and pharmaceuticals, and anyone living in the caliphate can apply for free health care, provided need can be established. “You can go to the doctor or hospital for no money,” Abu Khaled said. “If you can’t go to the doctor or hospital in Islamic State territory, if you have to go abroad, they pay you. No matter what the amount. If you have cancer and you need chemotherapy in Turkey, they will pay for everything, including your hotel. Even if it’s tens of thousands of dollars.”
And doctors in al-Bab hardly complain about losses because medicine is one of the most profitable careers one can have in al-Dawla. Physicians are paid between $4,000 and $5,000 a month to keep them from running off to Turkey.
For these reasons, Abu Khaled said, Syria is the “five-star jihad,” at least compared to Iraq. “Over there is nothing, but you come to al-Bab, there are coffee shops, there are nice things. You can have a decent life.”
http://www.thedailybeast.com/articles/2015/11/17/inside-isis-torture-brigades.html
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oralloy wrote: "If we were to split the Kurdish and Sunni areas of Iraq and Syria off into separate states, it is likely that the Sunnis, free from worry about being massacred by Assad or Iraqi Shia, would be happy to form a moderate government again."
Well, who is this "we" that will unilaterally determine the borders of the sovereign state of Iraq, which has a government? As for Syria, no doubt the largely sectarian, educated, general population would agree with you. But even if we get rid of ISIS tomorrow, there is still al-Nusra, an al Qaeda affiliate, which along with its Islamicist allies would then be (if they aren't already) the strongest rebel group.
If Syria is split up into an Alawite coastal state, a Kurdish state in the north, a non-ISIS radical Islamic state in the central portion, and a moderate FSA controlled state in the south, that still leaves a Sunni radical controlled state in place; and who will keep them separated and at peace? All of the pragmatic alliances between rebel groups that now exist to fight Assad will fall apart once the central government falls. The end of Assad need not mean the end of civil war in Syria. And from Syria, Islamic radicals can still subvert Sunni Iraq.