My "Marijuana Solution" is quite simple. Make it illegal to sell, illegal to buy, but make it LEGAL to grow and smoke on your own property. If you want to smoke, you can smoke. You still have the same penalties for selling to minors, and to adults as well. No one is profiting from marijuana, unlike the current problem with the supposed "Drugs Fund Terrorism" that supposedly exists. Just my view.
As to "harder drugs" we need to shift the way in which we look at the problem. Why are we throwing addicts into jail (in the US)? How does this help them? We need to shift our view away from punishing drug use to TREATING drug use. The War on Drugs has clogged our prisons with people that shouldn't be there. We are punishing a heroin addict the same way we are punishing murderers. It makes absolutely no sense to me. I think the "War on Drugs" would see an immediate return if more money was spent on treatment instead of pushing these people through the justice system.