"Terrorism" a tactic, NOT a thing you can fight a "war" against!
"Terrorism" with the exception of 911 is just background noise, it's been going on for hundreds of years, everywhere!
The government of these USoA's have joyously pounced on "Terrorism" as an excuse to radically seize/expand more power and destroy even more of the Constitution in the process! Wasn't it Bush that said "It's terrible to let a disaster go to waste" or something along those lines?
Everytime you drop a bomb, fire a missile, shoot a .50 and miss your intended target, and. You blow up some farmers hooch, kill a bus full of school kids, kill the village "holy man". The skinny farmer who in burying little bloody rags of meat that used to be his family, becomes a man filled with a kind of hate that very few of my fellow Americans (thankfully) can understand, and the only thing that can stop him is a bullet, he cannot be frightened, bribed or reasoned with, that errant bomb has created a "Terrorist"!