Casus foederis

Casus foederis (or casus fœderis) is derived from the Latin for "case for the alliance." In diplomatic terms, it describes a situation in which the terms of an alliance come into play, such as one nation being attacked by another.

Casus foederis

Casus foederis (or casus fœderis) is derived from the Latin for "case for the alliance." In diplomatic terms, it describes a situation in which the terms of an alliance come into play, such as one nation being attacked by another.