U

UChannel 
The UChannel (also known as the University Channel) makes videos of academic lectures and events from all over the world available to the public. It is a place where academics can air their ideas and present research in a full-length, uncut format. Contributors with greater video production capabilities can submit original productions. The UChannel project is an initiative of Princeton University's Woodrow Wilson School of Public and International Affairs, which is leading the effort to build university membership and distribution partners.

The United Nations (UN)
This is the sitemap for the UN system of organizations.

The USC Center on Public Diplomacy
The University of Southern California Center on Public Diplomacy is a joint academic research, teaching and training Center created and run jointly by the USC Annenberg School for Communication and the USC College of Letters, Arts and Sciences School of International Relations. The website features a wiki, regular blog posts, podcasts of events, special reports and publications and more.