HAVANA, June 23, 2016 (Xinhua) -- Image taken on June 23, 2016 provided by the Colombian Presidency shows the United Nations Secretary-General Ban Ki-moon (2nd-L, back), Colombian President Juan Manuel Santos (3rd-L, back), Cuban President Raul Castro (4th-L, back) and Timoleon Jimenez (5th-L, back), the top leader of the Revolutionary Armed Forces of Colombia (FARC), attending the signing ceremony of a historic ceasefire agreement between the Colombian government and the FARC, in Havana, capital of Cuba, on June 23, 2016. Colombia's conflict has killed more than 220,000 people and displaced millions since 1964. (Xinhua/Colombian Presidency)
