WASHINGTON (AP) — President Barack Obama is accusing White House hopefuls of concocting "half-baked" ideas for solving the crisis in Syria, appearing to even dismiss his former Secretary of State Hillary Rodham Clinton's call for a no-fly zone before later clarifying his view of the Democratic front-runner. The idea of a no-fly zone — a region of Syria that the United States would protect from bombing to create a safe corridor for refugees — has emerged as a favorite option for Democratic and Republican candidates. The president's comments came amid escalating concerns about the crisis in Syria, where a 4½-year civil war has killed more than 250,000 people and left the country a breeding ground for terror groups, including the Islamic State. Russia began launching airstrikes this week under the auspices of defeating the Islamic State, though Obama on Friday accused Moscow of being more interested in bolstering Syrian President Bashar Assad, a Kremlin ally. Clinton was among the more hawkish members of Obama's national security team during his first term, and has long touted her early support for arming moderate Syrian rebels to fight the Assad government. Declaring a no-fly zone over Syria would in effect put the U.S.