I envy your naivete...."fine American soldier fighting evil".  You paint such a simple picture of good vs. evil, the hero vs. the villain.  However, if you actually knew the first thing about the Middle East, you would know that the evil Al Qaeda was actually fighting on the same side as U.S.' ally, Saudi Arabia, in Yemen and was being supplied American weapons to further US and Saudi Arabian interests.  you may also know that the U.S. has been funding and supplying Al Qaeda in Syria to help them overthrow Assad who disagrees with American foreign policy.  And finally, you may be able to connect the fact that the American travel ban has targeted a number of countries that had nothing to do with global terrorism in an effort to placate the masses and avoid people asking questions about why their country continues to support "terrorists" and states sponsoring "terrorism".

Still seem so black and white?