Pot, cannabis, should be deregulated and sold like alcohol and tobacco.
RE: other hard drugs, meth, opiates etc. When I hear libertarians and liberals talk about how deregulating these substances would just solve the "drug war" problem -- I believe they are talking out of their ass and have no clue about chemical addiction, and the massive collateral damage that goes on with every addict.
Also, the notion of a "non-violent" drug crime is mostly b.s. too. Unless you're talking about a person who grows pot for personal use only. People don't understand the amount of violence done to the human body with the habitual use of meth and opiates. If you're selling or smuggling meth or heroin, just because you don't carry a gun, you're still involved in an extremely violent crime.