AP Photo

The Zetas have many sides. The group is at once sophisticated and ruthless, coordinating multi-caravan ambushes and sending hooligans to launch a wild assault on a police station. It has gang-bangers and Special Forces snipers on its payroll. It uses a sophisticated radio system and a machete in the same operation. It has a political platform that consists of shaking down the entire political class. And it has the accounting system of a multinational company, but the uncanny ability to destroy its own sources of income.