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
Russo-Swedish War (1741–1743) Russia was added to the Russian gains in the Treaty of Nystad () in 1721, under the Governorate of Vyborg. This was later incorporated into the Russian Grand Duchy of Finland in 1812. Russo-Swedish War (1741–1743) The Russo–Swedish War of 1741–1743, known as the Hats' Russian War in Sweden and the War of the Hats in Finland, which resulted in the Lesser Wrath (, ), or the occupation of Finland, was instigated by the Hats, a Swedish political party that aspired to regain the territories lost to Russia during the Great Northern War, and by French diplomacy, which sought to