International Security was launched forty-four years ago, in the summer of 1976, by what was then called the Program for Science and International Affairs. For thirty-one of those years—nearly three-fourths of its history—Sean Lynn-Jones has played a central role in running and shaping the journal. He has been a masterful manuscript diagnostician, becoming legendary as a provider of comments. He has had a keen eye for promising manuscripts and has been uncommonly skillful at pulling together interesting selections of articles. He has combined a wide knowledge of the field with a rare ability to situate potential articles in the literature and to judge their contribution. He has possessed an uncanny knack for the deft title. He has handled all the pressures and mishaps associated with managing a relentless decision and production process with aplomb and without losing his good nature. Through it all, he has been a congenial colleague and has retained his well-developed sense of humor. Sean deserves much of the credit for what International Security has become. Now, alas, he has decided to retire. For me personally, having worked with Sean every one of those thirty-one years, it is hard to imagine the journal without him and even more difficult to adequately express my appreciation for his enormous contribution in making and sustaining the journal as an important and respected voice in the field. But we must carry on without him, while wishing him well as he travels the world in fulfillment of his professed retirement agenda. We are fortunate that Morgan Kaplan has agreed to take on the job of replacing the irreplaceable Sean Lynn-Jones. Morgan has arrived with energy, enthusiasm, expertise, and a deep commitment to carrying on in the tradition that Sean has established. Profound, if inadequate, thanks to Sean. Warm and expectant welcome to Morgan.
—Steven E. Miller