On 11 December 1946 Saudi Arabia gave definitive signature to the Lake Success protocol amending the pre-war opium and narcotics conventions, including the 1931 Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs. The amended 1931 Convention entered into force for the parties on 21 November 1947.[1][2]
Listed for context. No score change is recorded for Saudi Arabia here.
References
Checked. The date and the event were compared with a source that was read.