In yet another blow to Mexico's failed drug prohibition war, a Mexican army officer assigned to guard President Felipe Calderon leaked military intelligence to drug trafficking organizations, trained hit men and supplied military weapons to Los Zetas, according to a U.S. Embassy cable recently released by Wikileaks. The cable says the case was the most serious security breach to date during the Calderon presidency and indicates that Mexico's powerful drug traffickers have infiltrated large parts of the security apparatus.