Questions for those who clamor for the United States to "do more" in Syria

"... Those who clamor for the United States to "do more," meaning further militarizing a brutal civil war beyond the president’s "ramp up" with a low-grade regime change policy, should have the burden of explaining how such an approach will end the war and its related tragedies, sooner rather than later; what exactly is the endgame, reflecting on the experiences of Iraq and Afghanistan; how it will defeat terrorists who are laying waste to parts of Syria and Iraq and threaten the United States and its allies; and, in the process, keep the United States off the slippery slope to further military engagement, which Americans don’t want."