Marijuana is legal for adult use in 8 American states as well as Uruguay, but those legal markets have yet to put a dent in the global supply of hash (cannabis resin). Five other countries lead the world in hash production according to a new report from the United Nations Office on Drug and Crime (UNODC).

The top country is Morocco, seconded by Afghanistan, with Lebanon, India and Pakistan rounding out the top 5. The fact that cannabis is still illegal in each of those countries suggests that global prohibition has been and continues to be a failed policy around the world.

So if world leaders want to combat drug use, they should think beyond criminalization since it simply doesn't work. Alternatives include following the lead of Portugal, which decriminalized all drugs in 2000 and hasn't seen a spike in drug use. Or countries could take things one step further and legalize all drugs as per the advice of former United Nations Secretary General Kofi Annan. Last year, Annan wrote an essay calling on world leaders to consider legalizing all drugs so that they can control the supply and quality of those substances while restricting access to adults.