Deterrence in 1939

Rather than a case where deterrence was not tried, 1939 is a case where deterrence failed. As such, it has important implications for deterrence theory. Mutual deterrence must operate on roughly the same time perceptions. Britain felt impelled to deter Germany after Prague, but could offer only a long-term deterrent. Germany's short term appeared so favorable that the long-term uncertainties posed by Britain and France failed to restrain her. The experience of 1939 also underlines the importance of political factors, particularly realignment in mutual deterrence. The Russo-German Pact tipped the balance toward war. In the contemporary setting, calculations of time perspectives between the Soviet Union and the United States are important for mutual deterrence, especially in Europe. Changes in the Sino-Soviet split hold further implications for contemporary deterrence.