I think it was Korea. :)
There was never a "take over." Russia was at war with Japan in 1904 during the Russo-Japanese War (in which Japan consistently defeated Russia).
Japan defeated Russia in 1905 in the Russo-Japanese War.
In response to Japan's attack on Port Arthur, Manchuria, Russia went to war with Japan in 1904-1905. This war was known as the Russo-Japanese War.
Russia .
The 1904-05 war between Japan and Russia is generally termed the Russo-Japanese War. To the surprise of many European nations, Russia was unprepared for this war and lost to Japan. Japan never declared war on Russia, they just attacked various Russian territories in East Asia.
we fought japan,germany,and russia we had a cold war.
Russia has nuclear weapons and a modern army. Japan has put the military aside since World War II.
Russia
The war was to gain control over Korea and Manchuria
Russia was fighting only one nation during that time frame; Japan.
Japan kicked the snot out of those Ruskies in 1905.
China