Mexican President-elect Obrador has declared his intention to combat drug cartels with a bold strategy – decriminalization of opium and marijuana. But while this policy may hurt the cartels, it is not likely to destroy them, and faces significant opposition both at home and abroad. “You can’t fight violence with more violence”. That was the answer of Mexico’s future President Andrés Manuel López Obrador (AMLO) when he was asked about the strategy of the use of force against narco-traffickers. The newly elected president, who will . . .