Sectarian fighting in Tripoli, Lebanon
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Syrian fighting 'could spread into Lebanon'

The civil war in Syria has threatened to spill over into neighbouring Lebanon, where the Damascus regime and the rebels both have supporters.

Hezbollah, which draws its support from the Shia community, is supporting President Assad's forces while Sunni militias sympathise with the Free Syrian Army.

BBC Arabic's Nahed Abouzeid visited the Lebanese city of Tripoli, where Alawite and Sunni militias from the rival Jabal Mohsen and Bab al-Tabbaneh neighbourhoods regularly exchange fire.

Watch his report on Lebanon on the Brink for Our World on the BBC iPlayer.