CNN argues that the war on drugs has failed . Gavir : Time to replace current policy with `` more humane , efficient approach '' U.S. remains the principal source of cocaine for the world . This is despite $ 4 billion in anti-drug aid from Colombia in recent years .
Cesar Gavir argues 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 world . This is despite $ 6 billion in anti-drug aid from U.S. in past decade .