Should IS (Islamic State) get their own country?

This is a very random question that just came to my mind. It could be beneficial if the Islamic extremists would be in one country. Also maybe having to run their own country would make them less radical, because they'd have to be more responsible. Also it would be easier to have an eye on them that they don't do anything crazy, if they're in one place.

Should IS (Islamic State) get their own country?
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