https://en.wikipedia.org/wiki/Lobster_War

The Lobster War (also known as the Lobster Operation; Portuguese: Guerra da Lagosta; French: Conflit de la langouste) was a dispute over spiny lobsters that occurred from 1961 to 1963 between Brazil and France. The Brazilian government refused to allow French fishing vessels to catch spiny lobsters 100 miles (160 km) off Brazil’s northeastern coast[5] by arguing that lobsters “crawl along the continental shelf”. The French maintained that “lobsters swim” and so they could be caught by any fishing vessel from any country.[6]

Cue for the French military command nervous because a single missile costs more than all the fishing revenue in a decade; while the Brazilian military command is nervous because “WTF, president, are we really getting into war with France?!”; while the French population is nervous protesting their government using the military to cause an ecologic disaster; while the Brazilian population is nervous making some samba about how crabs are fish when the tide is rising only.