Image provided by the Colombian Presidency shows Colombian President Juan Manuel Santos (L-Front) shaking hands with former United Nations Secretary-General Kofi Annan in Cartagena de Indias, Colombia, on Sept. 26, 2016. Santos and the rebel group's top leader Timoleon Jimenez signed a historic peace deal on Monday afternoon in the city of Cartagena, ending a 52-year conflict. (Xinhua/Cesar Carrion/Colombia's Presidency)