The Kellogg-Briand Pact and the Washington Naval Disarmament Conference both took place to stop war from happening and were initiatives from mostly (but not all) Western countries. This was prompted due to the end of World War I and the rising of threatening naval forces, which were seen as enemies. This purpose was not accomplished as World War II followed shortly.
The concepts in the Declaration come from the tenets of the Enlightenment, including individualism, the social contract as theorized by Jean-Jacques Rousseau, and the separation of powers espoused by Montesquieu. The spirit of secular natural law rests at the foundations of the Declaration
