At the time it was optimistically hoped that the signing of the Kellogg-Briand Pact would stop any future wars, but the impact of the Great Depression in the 1930s led nations such as Japan and Italy to launch invasions of Manchuria and Abyssinia respectively.

The Paris Peace Conference convened to establish the terms of the peace after the First World War.

On the 17th September 1978 the Camp David Accords, which led to the first ever peace treaty between Israel and an Arab state, were signed by Egyptian President Anwar El Sadat and Israeli Prime Minister Menachem Begin.