In the first part of an ongoing series on North Korea’s nuclear weapons program, Dr. Gary Samore, the Belfer Center’s executive director for research, describes the history of North Korea’s nuclear weapons development and subsequent international efforts to dismantle it, including a landmark 1994 agreement which he helped negotiate. He details the negotiating tactics employed by North Korea in the past, expresses skepticism over the possibility of a complete denuclearization, and weighs in on the Trump Administration’s negotiating strategy.