no
Battle of Tsushima between Russia and Japan 1905.
Russia lost the war with Japan in either 1904 or 1905. I think the war between the countries started in 1904 and ended in 1905.
American President Theodore Roosevelt supervised the negotiations between Russia and Japan that resulted in the Treaty of Portsmouth in 1905, ending the Russo-Japanese War.
Japan defeated Russia in 1905 in the Russo-Japanese War.
Russia lost to Japan in the Russo-Japanese war in 1904-1905.
Between 1900 and 1905 Russia occupied a City state called Port Aurthur which is today's Dalian. this city state was then lost to Japan in 1905 following the Russo-Japanese war of 1904-5.
Theodore Roosevelt negotiated a treaty ending a war between Russia and Japan in 1905. He was awarded the Nobel Peace Prize in 1906.
He brokered a peace treaty between Russia and Japan in 1905.
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.
Japan
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.
The Treaty of Portsmouth signed on September 5, 1905 by President Theodore Roosevelt.