Nation building by the United States has failed countless times so why continue a failing idea. The U.S. put the sha in power in Iran and Islamic extremists over threw their government, and Iraq is about the same story. Nation building has almost always failed since the Wilson administration. I think the real reason the U.S. is in Iraq is because of oil. Since the 1990s the U.S. has always fought in oil rich countries. This terrorist crusade seems to be a fight for oil, and there’s no way the U.S. isn’t drilling for oil in Iraq and Afghanistan.