Just one city now stands between Libyan strongman Muammar Gaddafi’s troops and the rebel capital Benghazi. On Monday, Libyan fighter jets began attacking Ajdabiya—what Al-Jazeera calls the rebels' “last line of defense” before Benghazi. Should Gaddafi’s forces advance and capture the city, they’ll have access to roads to surround Benghazi and cut off the rebels’ supply lines with Egypt. Germany and Russia, meanwhile, raised questions at the U.N. about a no-fly zone that make it seem increasingly unlikely. A spokesman for the Libyan rebels visiting Paris told European leaders and U.S. Secretary of State Hillary Clinton, “We want a no-fly zone, we want tactical strikes against those tanks and rockets that are being used against us, and we want a strike against Gaddafi's compound."