As the Syrian civil war rages on, Sen. John McCain called on Sunday on "Face the Nation" to establish a safe zone for the Syrian rebels, CBS News reported. Last week McCain secretly visited the war-torn country to meet with some of the rebel forces taking on Syrian President Bashar al-Assad, and stepped up his pressure on US President Barack Obama to provide them with arms. On Sunday, he called the opposition "very tough - they're battle-hardened. They're very dedicated. They are not al-Qaeda; they are not extremists." "We have some very strong and good people who are fighting for freedom and are being massacred as we speak," McCain said. "And remember all this talk we've had in the past year or two: It's inevitable that Bashar Assad will fall? Well I think we can't make that statement today. The administration has shied away from escalating its response to the ongoing violence in Syria, despite hotly debated evidence that chemical weapons were used there in the past few months. Obama has insisted he will not act on anything less than categorical evidence, making repeated allusions to the inaccurate information that drew the US into the Iraq War. "We need to give Syrian rebels a no-fly zone," McCain said. "The Israelis have shown us we can take out their facilities from a distance, that we don't have to risk our pilots. We can crater their runways, we can take out their air assets, we can provide them with a safe zone so that the Syrian opposition council outside Syria can come into Syria and coordinate with the military Gen. [Salem] Idris, and the militia military inside Syria. "And we can establish that safe zone," he continued, "and I'm confident that we can prevail." Sen. Jack Reed, D-R.I., a top Democrat on the Senate Armed Services Committee, argued later on the show that a no-fly zone "is not going to effectively deter the Assad regime - they can use artillery, they can use helicopter gunships." "I think the issue is not a military issue; it's the organizational and institutional coherence of the opposition military forces," Reed said. "The key here is a political resolution. That's why the conference in Geneva is so critical, and it's critical that the Syrian opposition attend." Reed said that while he agrees with McCain that Assad has "stabilized his position significantly" having been able to reconstitute his forces, "I don't think he has a decisive position where he can control all of Syria." "I think my fear is that what you get is a fragmentation, what you get is a spillover into other areas," he continued. "In the long term, the resolution must come from political cooperation and cooperation from parties that to this point, particularly the Russians, have not been helpful. I don't think there's a major expectation that the Iranians will be constructive. And, in fact, you know, they see this as an existential sort of battle," Reed explained.