The thing to know about Rwandan President Paul Kagame is not just that he is a dictator responsible for human rights abuses but that, despite this, he has a great many friends.

Kagame, credited with commanding the rebel force that put an end to Rwanda’s genocide 20 years ago, has made himself a global celebrity. Bill Clinton hails him as among “the greatest leaders of our time.” Tony Blair calls him a “visionary.” Bill Gates works closely with him. Kagame has spoken at Harvard and received honorary doctorates from a number of universities in the United States and Europe. U.N. Secretary General…