I simply point it out because every time someone dismisses them as being a bunch of nutbars, or inept like you have, it gives them power. People don't expect much from an untrained group, and then all of a sudden you have coordinated attacks that kill and wound hundreds of people. It obviously worked for them.
And you're far from kicking their asses in Iraq or Afghanistan, I would say just the reverse in some areas. And it wasn't a sweeping generalization, just look how the west reacted after 9/11. Hey lets rush into a country that had nothing to do with the attacks, but somehow it makes us feel like we're doing something. Check your US history, its full of knee jerk reactions.
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