Peace-planning is the attempt to invent institutions and to reformulate policies to prevent future wars. Among the numerous ideas on the future organization of the peace, the idea of disarmament has found particularly wide acceptance. In time of peace, there is no need of maintaining armies and armaments on their war time level. Farreaching demobilization is an economic necessity. Consequently, no objections are being raised against the substantial reduction of armaments after the end of hostilities.