In under two weeks Syrian rebels have moved through the country and taken Damascus - bringing to an end 50 years of rule by the Assad family. The country borders Israel, Lebanon, Turkey and Iraq, and in which Iran and Russia take the most active of interests.

So why did the government of Bashar Al Assad fall so fast, who are HTS the rebels who toppled him, and what does it mean for the region and the world?

Charles Lister, Senior Fellow and the Director of the Syria and Countering Terrorism & Extremism programs at the Middle East Institute in Washington DC. Lina Khatib, Director of the SOAS Middle East Institute. Chris Phillips, professor of international relations at queen Mary’s university, an associate at Chatham House and author of The Battle for Syria. Shashank Joshi, defence editor at The Economist.

Presenter: David Aaronovitch Producers: Charlotte McDonald, Kirsteen Knight and Beth Ashmead Latham Sound engineers: Rod Farquhar, Neva Missirian Editor: Richard Vadon Production Co-ordinator: Gemma Ashman