From Chris Floyd:
UK intelligence confirms that last year's July 7 London bombings were a direct result of the Iraq War. It was not the work of long-time al Qaeda activists, but young Britons who had been radicalized by the unprovoked invasion of the Muslim heartland.
And let's be clear: this is just the very beginning, the first, faint echoes of the coming whirlwind of blowback that will hit the United States and Britain as a result of the monstrous and murderous folly in Iraq. The victims of 7/7 are the first fruits of a terrible harvest of innocent blood. None of this retribution will be "justified" in any way--that's not the point here. The point is that you cannot launch wars of aggression and slaughter tens of thousands of innocent people and expect a Gandhi-like response from your victims and their compatriots.