CULIACÁN, Sinaloa — Before dawn, an elementary school principal in the capital of Mexico's Sinaloa state checks various chats ...
Convoys of military vehicles are now a common sight in the Mexican city of Culiacan, following the arrest of Sinaloa cartel ...
Between 200,000 to half a million U.S. firearms are smuggled into Mexico every year, "60 Minutes" reported last December.