Treaty of Stettin (1653) Treaty of Stettin (1653) The Treaty of Stettin () of 4 May 1653 settled a dispute between Brandenburg and Sweden, who both claimed succession in the Duchy of Pomerania after the extinction of the local House of Pomerania during the Thirty Years' War. Brandenburg's claims were based on the Treaty of Grimnitz (1529), while Sweden's claims were based on the Treaty of Stettin (1630). The parties had agreed on a partition of the Swedish-held duchy in the Peace of Westphalia (1648), and with the Treaty of Stettin determined the actual border between the partitions. Western Pomerania became Swedish Pomerania, Farther
Treaty of Mutual Cooperation and Security Between the United States and Japan To support that requirement, it provided for the continued presence of US military bases in Japan. The treaty also included general provisions on the further development of international cooperation and on improved future economic cooperation. The treaty has lasted longer than any other alliance between two great powers since the 1648 Peace of Westphalia. The treaty had a minimum term of 10 years. However, it provided that it would remain in force permanently unless one party gives one year's notice that it wishes to terminate it. The earlier Security Treaty of 1951 provided the initial basis for the Japan's security