Being in our debt really annoys some Muslims. The Libyans are in or debt for our air support allowing them to overthrew a tyrant and our ambassador is killed. You would think the population would not have participated in the plot but warned us. The U.S protected Saudi Arabia from the encroachment of Iraq, and we had 9-11 in response. A Los Altos Marine learned Arabic and stayed in the advance team to help out the Afghans and was invited to a predawn Ramadan breakfast, came and was killed there. It may be better not to do favors for Islamic nations. A related comment of mine is now on Dan Drezner's Foreign Policy blog.