Title: From Port Arthur to Portsmouth Location: Russia Document: Lithograph Time: 1905 ON September 5, 1905, after four weeks of tense negotiations, Russian and Japanese diplomats met in Portsmouth, New Hampshire, to sign a treaty ending a war that had stunned the world and redrawn the map of East Asia. The Russo-Japanese War began in early 1904, driven by clashing imperial ambitions in Northeast Asia, particularly over rival claims to Manchuria and Korea.