Since 1945 when Hiroshima and Nagasaki suffered the atomic bomb on August 6th and August 9th respectively, former President of the Malaysian Physicians for Social Responsibility, Dr Ronald McCoy has been against war and nuclear weapons. In this first of two parts, we commemorate these events by speaking to Dr McCoy himself to find out what drives him to take up the issue of nuclear disarmament with such passion and what fuels his zeal to see a nuclear-free future.