British control of the routes east would prevent Russia from reinforcing its First Pacific Squadron by sea in the proposed scenario. French ships already in East Asian waters would add to Japan's opponents, but their limited numbers would be insufficient to reverse the local balance. British ships in the region would also become available to support Japan. The expected result is Japanese sea control and a much harder position for Russia. That local naval advantage would shape the wider war without guaranteeing an immediate peace.
Notable Point · 1:00:57-1:01:49
Why British intervention would isolate Russia's Pacific fleet
British participation is expected to cut off Russian naval reinforcement and give Japan a stronger local position despite French ships in East Asia.