Sure, make Israel and the US repent to the arab world, that's what you are advocating after all. Didn't the WTC teach your type of people anything?
If America had spent one hundredth of the money reconstructing Afghanistan after they fought our war against our enemy, that it spends on the Jewish state every year, that does absolutely nothing for us, there would be no Al-Qaida in Afghanistan, no terrorist camps, and no narcotics cultivation. There would be a pro-Western model that all the Middle Eastern people could start to emulate.
And if it didn't give carte blanche to a Jewish state that murders the original inhabitants of the Palestinian lands, there would not be any causes for any of terrorists to support.
You take sides in wars, you're going to acquire enemies. That's why there weren't any attacks in Europe.