Stephen Sackur visits the grand presidential palace in Tunis to speak to the Tunisian president and former human rights campaigner Moncef Marzouki. During his presidency, Tunisia's status as the success story of the Arab uprising has been threatened by growing internal tensions. What has happened to Tunisia's revolution?
(Image: Tunisian President Moncef Marzouki. Credit: FETHI BELAID/AFP/Getty Images)
