Colombia's President Juan Manuel Santos (C) delivers a speech as Police General Cesar Pinzon (L-R) Colombia's Defence Minister Rodrigo Rivera, Air Force Commander Julio Gonzalez and Police Chief Oscar Naranjo look on, in Bogota December 29, 2010. Colombian troops killed drug lord and ex-paramilitary leader Guerrero in a raid on his camp, the government said on Wednesday. REUTERS/John Vizcaino (COLOMBIA - Tags: MILITARY CIVIL UNREST)