They, along with the fascist leftovers from Eastern Europe and the leadership in the ME absolutely hate us with a red hot passion. They hate us for WW2, supporting Afghanistan against Russia, missile shields, supporting Israel, you name it. They created Bin Laden and Al Qaeda as the throw down whipping boy when they want to hit us hard.
We will get even when we develop the stealth UAV. They can get a taste of what terrorism can be with a little technology thrown into the mix.