There should be several regional, peaceful hegemony organizations to help unify warring nations. War is never a good thing, and it is especially bad in this day and age with the use of advanced weapons. Therefore it would only be beneficial to have some organizations that are focused on bringing peace to these nations.
Unification is useful to getting harmony in the countries of the world. The United Nations is an important organization because it provides discussion between all of the participating countries. The participating countries are also a part of the various agencies of the United Nations such as the National Security Council.