A permanent international military force with its own international training camps, above the control of any particular government, can bring unprecedented world peace in the same way that fifty years of the European community has ended war between its members: war between countries such as China and Japan will become as unlikely as a new war between France and the UK. It will be paid for by national governments who then need to spend less on defence. Economies of scale then mean that the world as a whole spends less on defence. Uniforce would be answerable to a board of national defence politicians. The funding of Uniforce will be capped so that no particular nation can exert undue influence. An international force cannot be used for unilateral purposes because its men and officers would naturally refuse to perform such a role. National forces can concentrate solely on defence. If all countries concentrated on defence, warmongering would be much less successful because national assets would not be conducive to it. Rogue states would understand for all time that unilateral arms races are over; the international military force could not be matched by individual national armies.
Full text and arguments:
"Uniforce: An International Military Force" by Vexen Crabtree (2007)