One thing I've learned over the last 20 years about Muslims is that for the right price, they won't care about religion or their own people. The Kurds are bought off by the jews, just like most muslims. The only reason Iran and other are any different is because their wealth and power is tied to being a jewish rival to such a degree that Israel can't really buy them off in a manner where they can keep their wealth and power. For the Kurds, this isn't the case. Their wealth/power stems from being against Iran.