First published in the magazine of Argosy (UK -Dec. 1971) with original title, then as The Panic Button in Ellery Queen's Mystery Magazine (US - Oct. 1962).
Likely based on the BBC radio episode 1-13 that aired 2 years earlier. Also printed in the collection .
The story deals with a British general named Garnet, someone that Mr. Calder has some contact with during the War. Garnet is a decorated leader who has of late become increasingly unstable. This becomes an acute issue as tensions with Red China grow severs and Garnet believes war not only inevitable but also desirable.