WTF is wrong with you? Why do you keep trying to stir the pot? Why isn't Bahrain, Saudi Arabia being similarly attacked then? What exactly is the role of foreign policy? What has Canada done that deserves it to get attacked? It didn't invade Iraq, it participated in Afghanistan precisely because of the 9/11 terror attacks.
Why didn't you write why India, Russia, Bali, Indonesia, Nigeria, Malaysia are also on the receiving end of these attacks?
It's terror sympathy bullshit at its finest. This pseudo supranational Muslim unity. These are people who weren't affected at all and yet they slaughtered an innocent man. It's got nothing to do with foreign policy.
In the 90's, once the Soviet Union disbanded and the communists withdrew, the Mujahideen turned on the very people who helped them, gave them arms and aid. Sure it was to the benefit of the US, but then what? How is it repaid?
But hey, let's forget the aid, money, medicine, infrastructure help and instead turn on them because they take out dangerous individuals but collateral damage happens.