The ways that people are responding to the London bombings are quite predictable. Hawks see this as more reason to fight the war on terror more vigorously (kill the terrorists), while doves see these terrorist attacks as a (justifiable?) response to the actions of the U.S. and the U.K.
One thing that is certain is that both sides will reiterate their arguments over the coming days.
Think about this: While western leaders were meeting in Scotland to discuss aid to Africa, terrorists were targeting innocent people with bombs. It's pretty clear who are the good guys and who are the bad guys.