DUBAI, United Arab Emirates (AP) - The U.S. has removed its most advanced missile defense system and Patriot batteries from Saudi Arabia in recent weeks, even as the kingdom faced continued air attacks from Yemen's Houthi rebels, satellite photos analyzed by The Associated Press show.The redeployment of the defenses from Prince Sultan Air Base outside of Riyadh came as America's Gulf Arab allies nervously watched the chaotic withdrawal of U.S.