I think not said:
Of course it's mainly US foreign policy, make sure you send a telegram to the parents of the bride and groom in Jordan, that were blown to bits not too long ago.
Of course, no one will be able to tell you which policy, specifically, is so heineous as to motivate an otherwise kind, gentle, loving human being to strap on a few pounds of explosives and tear a bunch of seven year olds on a school bus to bits.
They will also ignore any attempt on your part to understand exactly how Bangladesh is responsible for U.S. policy, not to mention Thailand - I just read today that the Jihadi's are bragging about their army being 3000 strong in southern Thailand. Nothing like decapitating a Buddhist monk to show your revulsion at U.S. foreign policy. Apparently a bomb went off in Malaysia tosay also. I have no idea how Dagestan or the Beslan school kids are being deemed responsible for U.S. foreign policy.
The list goes on and on.