Following the death of Osama bin Laden, billionaire drug lord Guzman is now the world's most wanted man. A senior official in the U.S. Drug ­Enforcement Agency calls him the "Godfather of the drug world," adding that Guzman has more power than Pablo ­Escobar did during his 1980s heyday. The Mexican government remains unable to bring him to justice, and the senseless killings continue.