The United Nations voted to remove cannabis from a list of drugs with no medical benefit. The United States and the United Kingdom voted in favor of this removal. Russia, China, Pakistan, and Nigeria voted against this, wanting the drug to remain on the naughty list.
Cannabis has been used for medicinal purposes for thousands of years but because some people use it for recreational purposes, governments have been wary to legitimize it. Even though it has been lifted from a UN ban for medical use, it is still illegal for non-medical use.