Last night I read "Islam in Afghanistan" by William T. Vollman in Inside Islam. He wrote how Muslims from many countries went to Afghanistan to oust the infidel invaders, the Soviets. Interestingly, for its grander games, the U.S. funded and supplied these fighters, calling them "Freedom Fighters" even though they used terrorist tactics.
Now in addition to insurgents in Iraq who do not want foreign invaders, Muslims from other countries are pouring in to defend a Muslim country from infidels.
Not only do many of the U.S. policy makers not understand the culture of Islam, but they do not see the repeated lessons of history. Have they forgotten about the Crusades, which supposedly were to push the Muslims out of the Christian holy places?