The Peace of Nicias was a peace treaty that was signed between the Greekcity-states of Athens and Sparta in 421 BC. However, neither side was satisfied, and the treaty was later broken and rendered useless.
... members were the United Kingdom, France, Germany, Italy and Spain.
In 1985 France withdrew in favour of the 100% French Avions de Combat Expérimentaux (ACX) project ...