"There is no rush to do it."

"... "It's a Donilon call at the end of the day," the official said, referring to National Security Advisor Tom Donilon, who is leading a complicated interagency policy process on the Syria crisis. "There's not enthusiasm but there are differences of opinion about a no-fly zone," the official said. "There is no rush to do it."The Assad regime's lack of use of fixed-wing aircraft was cited internally as a reason not to declare at no-fly zone and that reason no longer applies, the official argued. Opponents of a no-fly zone have also argued that the Syrian internal opposition had not formally requested it. That reason is also no longer operative.
"There's a question of whether or not our government is willing to reject the request. Or they could take it into consideration for a long time," the official said. "There's a recognition that some decision has to be made. We are quickly reaching a turning point due to the escalation.".........
While this would require no U.S. combat forces on the ground, it could have a strategically significant impact by reinforcing the emerging rebel safe zones in northern Syria and allowing the opposition the space they need to organize politically and establish a transitional government on Syrian soil."..."