Iran acceded to the League of Nations convention limiting the manufacture and distribution of narcotic drugs on 28 September 1932. The international system had treated cannabis as a drug to be controlled since the 1925 Geneva convention, but Iran's own laws still did not ban it: the 1926 penal law punished only public intoxication, and the government ignored calls to control cannabis until 1959. The accession did not change what adults could do with cannabis at home.[1][2]
Listed for context. No score change is recorded for Iran here.
References
- United Nations Treaty Collection — Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs, Geneva, 13 July 1931: status of participantsIran, accession 28 September 1932archived
- Ghiabi, Maarefvand, Bahari & Alavi — Islam and cannabis: Legalisation and religious debate in Iran, International Journal of Drug Policy 56 (2018)Section 'From cannabis prohibition to cannabis regulation in Iran': cannabis omitted from Iran's first drug laws; the 1926 penal law; the 1959 banarchived
Checked. The date and the event were compared with a source that was read.