The Russo-Japanese War was "the first great war of the 20th century." It grew out of rival imperial ambitions of the Russian Empire and the Empire of Japan over Manchuria and Korea. The major theatres of operations were Southern Manchuria, specifically the area around the Liaodong Peninsula and Mukden; and the seas around Korea, Japan, and the Yellow Sea. Russia sought a warm water port on the Pacific Ocean, for their navy as well as for maritime trade. Vladivostok was only operational during the summer season, but Port Arthur would be operational all year. From the end of the First Sino-Japanese War and 1903, negotiations between Russia and Japan had proved impractical. Japan offered to recognize Russian dominance in Manchuria in exchange for recognition of Korea as a Japanese sphere of influence. Russia refused this, so Japan chose war to counter the Russian aggression in Asia. After discussions broke down in 1904, the Japanese Navy attacked the Russian eastern fleet at Port Arthur, a naval base in the Liaotung province leased to Russia by China, which led to war. The Russians were poorly organized and the Japanese defeated them in a series of battles on land and at sea. Wikipedia [ - ]

The Russo-Japanese War was "the first great war of the 20th century." It grew out of rival... [ + ]