The Commission on Narcotic Drugs (UNODC) is now in its 59th session (through March 22). This session is partly in preparation for the major UNGASS 2016 (United Nations General Assembly Special Session) next month that will be focusing on international drug policy.
You can follow along a bit with the CND2016 by reading the various draft resolutions, etc. here.
Also, CND Blog does a great job of following (and in many cases transcribing) the activities.