Colombia rebels opaque heading into talks

FILE - In this combo image of file photos shows the five main negotiators representing the Revolutionary Armed Forces of Colombia, FARC, in the peace talks with the Colombian government, from left: in a Sept. 4, 2012 file photo Marco Leon Calarca; in a Nov. 8, 2007 file photo Ivan Marquez; in a Sept. 4, 2012 file photo Ricardo Tellez; in a Jan. 13, 2002 file photo Simon Trinidad; and in a Sept. 4, 2012 file photo Andres Paris. The faces and names of the negotiators for Colombia's main leftist rebel movement, who open peace talks with government on Monday in Norway, are largely unfamiliar to their countrymen. (AP Photo/Files)Absent from the peace talks opening in Norway this week between Colombia's main leftist rebel movement and the government will be the guerrilla heavyweights who presided a decade ago over the last attempt to end a conflict that has claimed tens of thousands of lives over nearly half a century.