This document discusses the role of health professionals in promoting peace, health, and development. It covers how everything changed after the splitting of the atom, despite no change in thinking. It then discusses the history of mankind, the state of the world today, and where medical professionals stand. It examines the expected role of doctors to restore health and relieve suffering, and what peace and health mean. It details the bombings of Hiroshima and Nagasaki, the casualties, and health issues faced by survivors. Finally, it proposes solutions like eradicating nuclear weapons and increasing awareness, and discusses how medical professionals can contribute.