Ismael “El Mayo” Zambada, the leader of Mexico’s Sinaloa cartel, is one of the world’s most influential drug lords. Finally, he was captured by US Federal agents in El Paso, Texas on Thursday. Aged 76, Zambada co-founded the cartel with Joaquin “El Chapo” Guzman – currently imprisoned in the US. Guzman’s son, Joaquin Guzman…