Mr. Keeny talked about the evolution of nuclear test bans and treaties on the 40th anniversary of the first partial nuclear test ban treaty. The first nuclear test ban treaty banned the testing of nuclear weapons in the atmosphere, on the earth’s surface, in space, or underwater, but still permitted underground testing. Mr. Keeny was involved in negotiating this treaty. He responded to audience telephone calls, faxes, and electronic mail.

This was second in a series on anniversaries of historical events.