Syria war exerts strain on Lebanon tinderbox
27 June 2013 Last updated at 08:11 BST
Men like Sunni preacher Ahmad al-Assir and his rival Shia counterparts hold the key to what happens next in Lebanon.
Sectarian tensions in Lebanon have increased since the country's Shia movement Hezbollah backed Assad's government in Syria's civil.
Fresh clashes broke out on Sunday after police arrested a follower of Sheikh Ahmad al-Assir at a checkpoint.