Fatality in Fleet Street (Sprigg)

Newspaper magnate stabbed in his office just before he’s about to start a major war with Russia.  It’s technically science fiction: set in November 1939, then six years in the future; Stalin is dead, and his successors have introduced a gentler Communism.  Most of this is excellent – lively telling, a good spread of suspicion, a trial scene à la Clouds of Witness.  I’m not mad about the solution; in principle, it’s clever enough (although used by Henry Wade and Christopher Bush), but lacks oomph.