Dear Professor, There are two types of disasters, man-made and natural disasters, for this topic; the disaster I have chosen to express the discussion is a man-made disaster which is atomic energy and nuclear explosion. After World War 1, man-made disasters are also known as complex humanitarian disasters (Zibulewsky, 2001). This has become a significant concern in the world regarding the use of nuclear weapons, as it is very harmful and inhumane. In 1950 an agency was formed that formulated the rules and regulations for the use of atomic energy for a peaceful purpose named the International Atomic Energy Agency (IAEA).