Question: Julin Bristol is the codename given to a nuclear weapon test conducted at the Nevada Test Site on 26 November 1991, as part of which United States's  nuclear test series was a group of 7 nuclear tests conducted in 1991–1992, the final series of US nuclear tests, it was the last test explosion of a British nuclear weapon?
Sentence (from "Julin Bristol"): Both the US and UK, as signatories of the Comprehensive Nuclear-Test-Ban Treaty, ceased nuclear testing after Operation Julin.
Relevant evidence: No