Colombia's largest guerrilla army temporarily walked away from peace talks with the government Friday over President Juan Manuel Santos' refusal to agree to modify the constitution if a peace pact is struck, AP reported. The move comes after Santos announced late Thursday that he was asking Congress to set a date for a referendum on an eventual peace deal, which is apparently still far from being reached. It is the first time either side has broken off negotiations that began last year in Havana, other than for planned recesses. But the Revolutionary Armed Forces of Colombia, or FARC, stopped short of pulling out of the peace process entirely. -- SPA 19:14 LOCAL TIME 16:14 GMT تغريد