When Negotiations Turn Deadly — The Essays of Montaigne

Montaigne opens with a massacre near his home at Mussidan during an active treaty, then argues that in his age no trust in an enemy is excusable until the treaty is sealed, and even then a conqueror struggles to keep his word. Regillus promised Phocaea peaceful entry, brought his whole army inside, and could not restrain the sack. Cleomenes broke a seven-day truce by claiming nights were not mentioned. Casilinum fell while citizens relied on a safety warrant.

Montaigne notes war grants privileges that strain reason, yet he is astonished at Xenophon's permissiveness and catalogs later betrayals at Capua, Yvoy, Genoa, and Ligny. Chrysippus compared war to a footrace: run hard, but do not trip your opponent. Alexander refused a night attack on Darius, saying he would rather regret fortune than be ashamed of victory.

The essay does not preach treachery; it maps how the hour of parley concentrates risk. When talks begin, assume leverage shifts, documents matter, and the mood of armed men can override a commander's promise.