Mexican police were protecting the Zetas.

"La Barbie" a leader of the rival Sinaloa cartel, took out a full page advert in a Mexico City daily newspaper, to allege that Mexican police were protecting the Zetas.

For their part, the Zetas have long complained that the Sinaloa cartel enjoys police protection.

Despite debacles surrounding the Zetas and increasing violence, Deare - who physically resembles the tough but fair minded under-secretary of defence played by Harrison Ford in the fictional drug war thriller Patriot Games - thinks Mexico needs more, not less, US involvement.

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