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
Latvian–Soviet Peace Treaty Latvian–Soviet Peace Treaty The Latvian–Soviet Peace Treaty, also known as the Treaty of Riga, was signed on 11 August 1920 by representatives of the Republic of Latvia and Soviet Russia. It officially ended the Latvian War of Independence. In Article II of the treaty, Soviet Russia recognised the independence of Latvia as inviolable "for all future time". After World War I, Soviet Russia wanted to regain Latvia, since it had once been a part of the Russian Empire. The Red Army invaded Latvia in 1918 after the Latvian prime minister, Karlis Ulmanis, declared its independence. The Red Army was able