Mexico's Zetas: Soldiers defect to drug cartel

Drug gangs clash in lawless city

NUEVO LAREDO, Mexico (AP) -- Zooming around in sport utility vehicles bristling with weapons, Mexican soldiers-turned-drug hit men have taken this border city to the brink of anarchy, infiltrating local police and threatening anyone who gets in their way.
Residents and law enforcement officials say the men are the feared Zetas, former members of a military intelligence battalion sent to the border to fight drug trafficking. Instead, they joined the Gulf Cartel, one of Mexico's top drug gangs. They adopted the name Zetas -- a radio code for a military commander -- recruited followers and made the city of 300,000 their home base.