The Tunisian authorities have vowed to step up their fight against jihadists after last month's deadly terrorist attack at the Sousse beach resort. One of the main weak points has been clearly identified: the long, porous border with Libya. The neighbouring country is no longer a unified state, but rather a patchwork of rival governments, tribes and militias where extremists, criminal groups and weapons smugglers are now thriving.
So should Tunisia close the border completely? It’s a tempting solution but in practice it is proving impossible and would severely affect the local economy, as our correspondents Sandro Lutyens and Hamdi Tlili explain.
Programme prepared by Patrick Lovett.