sedPresident Obama is prepared to use U.S. military airstrikes in Syria as part of an expanded campaign to defeat the Islamic State and does not believe he needs formal congressional approval to take that action, according to people who have spoken with the president in recent days. Obama discussed his plans at a dinner with a bipartisan group of foreign policy experts this week at the White House and made clear his belief that he has the authority to attack the militant Islamist group on both sides of the Iraq-Syria border to protect U.S national security, multiple people who participated in the discussion said. The move to attack in Syria would represent a remarkable escalation in strategy for Obama, who has sought during his presidency to reduce the U.S. military engagement in the Middle East. More