On Feb. 27, a diplomatic process will begin in Geneva that could result in a new treaty giving the United Nations unprecedented powers over the Internet. Dozens of countries, including Russia and China, are pushing hard to reach this goal by year's end. As Russian Prime Minister Vladimir Putin said last June, his goal and that of his allies is to establish "international control over the Internet" through the International Telecommunication Union (ITU), a treaty-based organization under U.N. auspices.

If successful,...