Drug lords have been killed or captured, and cartels have splintered or collapsed, only to see more violent ones replace them and the illicit trade expand. So, 60years of war on drugs, what has actually worked? ...The Sinaloa Cartel, after all, did not go away after its chief, Joaquín Guzmán Loera, the notorious drug lord known as El Chapo, was captured and extradited to the United States. ...Rather than simply going after kingpins like Mr. Oseguera, the authorities need to take a holistic approach to dismantle these groups more completely, analysts say. The Mexican government has to use a combination...