Osiel Cárdenas Guillén was the leader of the syndicate that was part of what country?
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. Gulf Cartel: The Gulf Cartel (Spanish: "Cártel del Golfo" , "Golfos", or "CDG") is a criminal syndicate and drug trafficking organization in Mexico, and perhaps one of the oldest organized crime groups in the country.
Mexico