In the 1100 years, no wars or conflicts prevented the Ancient Games from being held, but in a short period of time, the Modern Games were cancelled three times because of wars. The first time was in 1916, then in 1940 and 1944. In World War One, over 37 million military and civilians lost their lives. In World War Two, between 50 and 73 million military and civilians lost their lives.
In 1956, there was the Suez Crisis, and the conflict between Mainland China and Formosa, and then the invasion of Hungary by Russia. The whole world was in a grip of fear and people were talking about the start of World War Three.
World War Two shook the foundation of human civillization; it should have served a lesson for future generations that aggression and violence was not the way to win world peace.