What is important about Western foreign policy is that it has helped cause chaos. It didn't do so without help or exploiting some schisms that were already there, nor does it excuse middle eastern governments or terrorists. It can't on its own explain why one individual bombs and other doesn't, but it has clearly been a factor in the outcomes we have now and the resulting suffering and displacement of people. But it's fanciful to put the behaviour of the West on some kind of moral pedestal. In persuing unjustified war and invasion in Iraq thousands of war crimes were committed including the use of phosphorus and depleted uranium. Babies are still being born with deformities now as a consequence. Your notion that someone is accountable when an individual misdemeanour comes to light is fine on one very superficial level, but ignores thousands of killings and incidents of torture that are simply never addressed, because that was the way we undertook the war, a war we had no purpose in conducting, the ripples of which continue to cause us problems. You are old enough to remember Vietnam. This is not a new behaviour or a one off. If you get your head out of the sand, you can remain a patriot, retain the view that the British Armed forces are the most professional and disciplined in the world, but see the ramifications of poor political choices.