Controversy over Tunisian jihadists fighting in Syria
15 May 2013 Last updated at 08:16 BST
Young jihadists from across the Arab world are entering Syria to join the rebels battling to topple President Assad.
Muslim men from Tunisia are believed to form one of the largest group of foreign fighters.
Tunisia's secular opposition has accused the government of being too lenient with Salafist sheiks who they say are radicalising young men - but the government says it cannot stop people from travelling.
Ahmed Maher reports from Tunis.