The United States has released Osiel Cardenas Guillen, former leader of the Gulf Cartel and founder of the Zetas, an armed organization that played a salient role in violent turf wars that marked ...

The former leader of the Gulf Cartel in Mexico was extradited to the U.S. to face drug trafficking charges, the Justice Department announced Thursday. Mario Cardenas-Guillen, 57, a Mexican national, ...

The Gulf Cartel was in the midst of a violent turf war when Cárdenas Guillén took over as its leader in 1999. For his protection, Cárdenas Guillén hired a bodyguard (retired Army lieutenant ...