In reply to mypyrex:
> Agreed, also it's a "war" that we HAVE to win.
I don't think that this kind of thinking or the war analogy is really that helpful. Witness the successes of the Wars on Drugs, Poverty, Cancer and, of course, Terror.
I also think it is worth drawing a line between IS and homegrown terrorists. There have, and probably always will be, homegrown acts of terror (for want of a better term). Before The current fashion for islamist terrorism there were, variously, the Oklahoma bombing, Unabomber, Dunblane, Hungerford, Baader-Meinhof - stretching all the way back to the anarchists and probably before that. There will always be a % of cranks and whether they blow themselves or other people up in the name of nationalism, anti-imperial technology, anarchism, left-wing idealism, right win idealism or just plain no-other-reason-than-having-a-screw-loose I'm not sure it makes much difference.
Then you have IS which, clearly, is a different type of threat. One which, "war" is perhaps a more appropriate response except that - even there - I don't see it being won by bombing the place flat. Maybe it doesn't really help us to think of it as a war & I certainly don't think that "winning" in the conventional sense is how it will end.