Mario Cárdenas Guillén is the brother of the Mexican drug lord who was the former leader of what group?
Osiel Cárdenas Guillén Osiel Cárdenas Guillén (born May 18, 1967) is a former Mexican drug lord and the former leader of the Gulf Cartel (Spanish: "Cártel del Golfo" ) and Los Zetas. Originally a mechanic in Matamoros, Tamaulipas, where he was born, he entered the Gulf Cartel by helping Juan García Abrego, the capo at the time; when García Ábrego was arrested in 1996, some infighting erupted within the cartel. Osiel Cárdenas eventually took control by killing his friend and contender Salvador Gómez, earning Cárdenas the nickname ""El Mata Amigos"" (The Friend-Killer).
People's Revolutionary Army (Colombia) The People's Revolutionary Army (Spanish: "Ejército Revolucionario del Pueblo" ERP) was a small marxist guerrilla organization in Colombia. The group originated in the municipality of Venadillo, Tolima Department in c. 1985 as a splinter group of the National Liberation Army and was commanded by its founder Édgar Castellanos, a.k.a. "Gonzalo" until his death in January 2007. The group became a military objective of the larger guerrilla Revolutionary Armed Forces of Colombia whom declared the group as an enemy and was persecuted by paramilitary. The Colombian government wanted the group for rebellion, kidnappings and extortion crimes.