1. From the Ethics Programs and the Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, and Harvard Medical School — both in Boston (L.F.); the Nossal Institute for Global Health, University of Melbourne, Carlton, VIC, Australia (T.R.); and the International Campaign to Abolish Nuclear Weapons, Geneva (S.T.). Dr. Ruff is founding chair of ICAN, and Ms. Thurlow was a corecipient of the Nobel Peace Prize on ICAN’s behalf; Dr. Forrow is the former chief executive officer, and...