President Barack Obama gave his first formal television interview as president to an Arabic cable TV network, telling Al-Arabiya that when it comes to Middle East matters "all too often the United States starts by dictating." Obama taped the interview with the Dubai-based network Monday as his envoy to the Middle East, former Sen. George J. Mitchell, set out for an eight-day trip to the region and elsewhere. "My job to the Muslim world is to communicate that the Americans are not your enemy," Obama said. "We sometimes make mistakes. We have not been perfect." The interview complemented the new...