Gambia president demands election rerun

President Yahya Jammeh of the Gambia reverses his decision to accept the result of last week's election where he was defeated by challenger Adama Barrow; Colombia's President Juan Manuel Santos speaks to the BBC as he prepares to receive the 2016 Nobel Peace Prize in Oslo on Saturday.

(Image: Supporters of the Gambian incumbent president Yahya Jammeh in The Gambia on 28th November 2016. Image: Marco Longari/AFP/Getty Images)