In fact, the majority of countries worldwide request military assistance from one of only a handful of nations (US, UK, China, Russia, France primarily) for pol

In fact, the majority of countries worldwide request military assistance from one of only a handful of nations (US, UK, China, Russia, France primarily) for police like protection through Defense Pacts/Treaties. The UN and NATO specifically, are explicitly chartered to serve as a collective for this function where all have shared interests. In reality most treaties are done outside of the UN. So I'm unsure on what basis you're suggesting that the political arms of nation states do not regularly seek a globally capable actor to police their neighbors.