As Allies Fell, Noose Closed on 'El Chapo'

For 13 years Joaquin "El Chapo" Guzman watched from the rugged mountains of western Mexico as authorities captured or killed the leaders of every group that challenged his Sinaloa cartel's spot at the top of global drug trafficking. Unscathed and his legend growing, the stocky son of a peasant farmer grabbed a slot on the Forbes' billionaires' list and a folkloric status as the capo who grew too powerful to catch. Then, late last year, authorities started closing on the inner circle of the world's most-wanted drug lord. The son of one of his two top henchmen, Ismael "Mayo" Zambada, was arrested at a border crossing in Nogales, Arizona in November as part of a sprawling, complex investigation involving as many as 100 wiretaps, according to his lawyer.