The Committee for Constitutional Supervision of the USSR declared that criminal liability for the illicit use of drugs was unconstitutional, three years after a decree had introduced it. Possession stayed a crime: in Russia from 1996 to 2004 even very small amounts of a drug such as heroin could bring years in prison.[1]
Listed for context. No score change is recorded for Russia here.
References
Checked. The date and the event were compared with a source that was read.