"Pentagon chief Chuck Hagel told Gulf Arab leaders on Saturday that the United States has a proven and enduring commitment to Middle East security, backed by diplomatic engagement as well as warplanes, ships, tanks, artillery and 35,000 troops. The U.S. defense secretary, speaking at a regional security forum, acknowledged Gulf leaders' concerns about the direction of U.S. policy in the Middle East, especially negotiations on Iran's nuclear program. But he said the U.S. emphasis on diplomacy should not be misinterpreted." (Quoted from Article).