These expected peace talks come after a deal was made with Colombia's more commonly known guerrilla group, The Revolutionary Armed Forces of Colombia (FARC). On June 23, 2016, Colombia president Juan Manuel Santos and FARC leaders signed a ceasefire deal. However, voting in a public referendum on October 2, 2016, the deal was narrowly rejected by 50.22% of the Colombian people.
Colombia has been under an asymmetrical civil war since 1964 when the central government began fighting paramilitary groups, organized crime groups, and the Marxist-Leninist guerrilla rebel group, FARC, and the Marxist-guerrilla rebel group ELN.
President Juan Manuel Santos will be receiving the Nobel Peace Prize in 2016 for his peace efforts in Colombia.
previously - before now
Marxist - following the teachings of Karl Marx / communist
guerrilla (groups) - an independent army that irregularly attacks a main army by "surprise"
ceasefire - an agreement to stop (military) fighting
referendum - a vote by the people of a country on a specific issue / question
asymmetrical - with many unequal sides, not only two sides
paramilitary - a semi-military force, not a regular military force
civil war - a war between one country / nation
solely - by one only