Question

what post - war organization provided for international diplomacy?
un
washington naval conference
league of nations
nato

Explanation:

The United Nations (UN) was established after World War II. Its main purposes include maintaining international peace and security, promoting international cooperation in various fields (such as diplomacy, economic development, social progress, etc.), and promoting respect for human rights. The Washington Naval Conference was mainly about naval armament limitations among certain countries and was not a comprehensive post - war organization for international diplomacy. The League of Nations was established after World War I, not a post - World War II organization. NATO (North Atlantic Treaty Organization) is a military alliance, not primarily focused on general international diplomacy.

Answer:

UN