Treaty of Portsmouth Treaty of Portsmouth The Treaty of Portsmouth formally ended the 1904–05 Russo-Japanese War. It was signed on September 5, 1905 after negotiations lasting from August 6 to August 30, at the Portsmouth Naval Shipyard in Kittery, Maine, United States. U.S. President Theodore Roosevelt was instrumental in the negotiations and won the Nobel Peace Prize for his efforts. The war of 1904–05 was fought between the Empire of Russia, an international power with one of the largest armies in the world, and the Empire of Japan, a nation which had only recently industrialized after two-and-a-half centuries of isolation. A series of
Great Northern War was finally concluded by the Treaty of Nystad between Russia and Sweden in Uusikaupunki ("Nystad") on 30 August 1721 (OS). Finland was returned to Sweden, while Swedish Estonia, Livonia, Ingria, Kexholm and the bulk of Karelia were ceded to Russia. Sweden's dissatisfaction with the result led to fruitless attempts at recovering the lost territories in the course of the following century, such as the Russo-Swedish War (1741–1743), and the Russo-Swedish War (1788–1790). Saxe-Poland-Lithuania and Sweden did not conclude a formal peace treaty; instead, they renewed the Peace of Oliva that had ended the Second Northern War in 1660. Sweden had