United Nations Secretary-General Ban Ki-moon (L) gives a speech during the signing ceremony of the final peace agreement between the Colombian government and the Revolutionary Armed Forces of Colombia (FARC), in Cartagena, Colombia, on Sept. 26, 2016. Colombian President Juan Manuel Santos and FARC Commander in Chief Timoleon Jimenez signed a historic peace deal Monday afternoon in Cartagena, ending a 52-year conflict. (Xinhua/Jhon Paz)
