Could Lebanon's army keep peace in the south after any truce?

Lebanon's army would be expected to deploy thousands of soldiers to the south, along the border with Israel, in the event of any ceasefire between Israel and Hezbollah. It would be under U.S. pressure to help keep the area free of the Shi'ite group's weapons. But the cash-strapped army is vulnerable to the country's sectarian tensions, which any such role could deepen. Lucy Fielder has more.