Peace treaty

A peace treaty was an agreement between at least two parties to end a conflict.
On 28 January 425,000,000 BC, the Silurians and Sea Devils signed a peace deal. (PROSE: Time Traveller's Diary)
Operation Double was a peace treaty between humans and Zygons. (TV: The Zygon Invasion)
On 23 April 2978, a peace treaty was signed, ending the ten-year Human-Omwanar war. (PROSE: Making History)