But then the spin will be:
"They never really were much of a threat"
"Isn't it amazing how the Democrats in Congress and Liberals in Europe put an end to all this terrorism despite the bullying hegemony of the Bush administration?"
"Imagine how much sooner the terrorists would have been defeated if we weren't distracted by invading Iraq. Or if the French and Germans were allowed to participate. Or if Bill Clinton were still president."
"They never really were much of a threat"
That one may not work for them. They could raise the ire of brave families who have had the tragedy of the official military delegation arriving at their doors with sad news.
They could anger those who have survived IEDs, mortars and rockets going off a little too close. (I've personally experienced this one.)
They might want to reconsider if they decide to spin it that way.
But you're right; I wouldn't put it past the scumbags to try that.