The Internet design deliberately avoids any kind of central control or dependence on any one, or a few, entities to function. Even what is arguably the most global service of all, the DNS, is distributed worldwide, for technical and practical reasons, yes, but in the process, impeding attempts to control it. Regimes that are succeeding at all, like Iran or China, only do so within their own borders.
If the U.N. does come up with some cockamamie notion, count on the technical cognoscenti to devise a system of VPNs, obfuscators like Tor, and whatever else is needed to thwart it. So far, efforts to install "back doors" on encryption protocols like SSL, ostensibly for law enforcement but so easily abused, have been checked.. So will this.