Humberto de la Calle (R), chief negotiator of the Colombian government, shakes hands Ivan Marquez, chief negotiator of the Revolutionary Armed Forces of Colombia (FARC), after signing a revised peace agreement in Havana, Cuba, Nov. 12, 2016. The Colombian government and the FARC on Saturday signed a new peace deal after nine days of intense negotiations in Havana. (Xinhua/Joaquin Hernandez)