Once Mexico’s deadliest drug trafficker, the weakened Arellano Felix cartel of Tijuana has merged with another gang in a desperate bid for survival, the country’s narcotics prosecutor said Thursday. Jose Luis Santiago Vasconcelos, deputy attorney general for organized crime, said recent intelligence showed that the Tijuana cartel had merged with the so-called Gulf cartel, led by Osiel Cardenas, to fend off usurpers. The main threat is from a Sinaloa state-based conglomerate headed by Joaquin “El Chapo” Guzman and Ismael “El Mayo” Zambada. Full Story