- Control over Manchuria: Both Japan and Russia had expansionist ambitions in Manchuria, a region in Northeast China. Japan sought to secure access to natural resources and expand its influence in the region, while Russia wanted to expand its territory and influence, viewing Manchuria as a vital strategic location.
- Competing Economic and Political Interests: Japan and Russia had competing interests in Korea, resulting in tensions between the two countries. Japan wanted to establish its dominance in Korea and viewed Russian influence as a threat.
- Conflict over Port Arthur: In 1898, Russia leased the Chinese port of Port Arthur, sparking further tension with Japan, as Japan saw Port Arthur as crucial to its security and dominance in the region.
- Growing Imperialistic Rivalries: Japan and Russia were both pursuing expansionist policies in the late 19th and early 20th centuries. They saw each other as potential obstacles to their imperial ambitions, leading to mutual suspicion and hostility.
Immediate Triggers of the War:
- The Invasion of Manchuria: In January 1904, Japan launched a surprise attack on the Russian fleet at Port Arthur, starting the Russo-Japanese War. This action was a culmination of tensions and disagreements over the control of Manchuria and other disputed territories.
- Violation of neutrality: Japan felt that Russia had violated the neutrality of Korea, which was under Japanese influence at the time.
In summary, the war between Japan and Russia was the result of a combination of factors, including rivalries in Manchuria, competing economic and political interests, conflict over Port Arthur, growing imperialistic rivalries, and immediate triggers such as the surprise attack on Port Arthur.