Low on ammo, rebels drive in northern Syria slows  STEVE NEGUS
Associated Press Published:  MAARET AL-NUMAN, Syria (AP) -- The
rebels' capture of this strategic city was a key success in
their advances in northern Syria against regime forces. But it's
so far proven an incomplete victory. Maaret al-Numan remains a
shell of a city.   The fighters have the base surrounded, and
deserters have told them the 350 troops from President Bashar
Assad's army inside are short on supplies, outnumbered and
isolated. But the rebels have supply problems of their own, with
few bullets and fewer still specialized anti-tank weapons needed
to deal the final blow to the base, where some three dozen tanks
and armored vehicles are holed up.  "If I had ammunition, I
could take Wadi Deif in 24 hours and stop the destruction of
this town," said Sair Mandil, the commander of the local rebels.
He spoke from his command post, set up in a 17th century caravan
trading post that had been turned into a local museum. The
caravanserai's old st