' Gavir believes that the war on drugs has failed . `` Just putting all consumers in jail , as the U.S. does , is not a solution , '' he told CNN 's Christiane Amanpour . ` Gavir : Time to replace current policy with ` ` more humane , efficient approach '' Colombia remains the principal source of cocaine for the US . This is despite $ 1 billion in anti - drug aid from Colombia in past years .
' Gavir believes that the war on drugs has failed . Gavir : Time to replace current policy with ` ` more humane , efficient approach '' Colombia remains the principal source of cocaine for the US . This is despite $ 1 billion in anti - drug aid from Colombia in past years .