What was the purpose of the Washington Naval Disarmament Conference and the Kellogg-Briand Pact? What prompted them? Was the purpose accomplished?

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.