Russo-Japanese War - Declaration of War

Declaration of War

Japan issued a declaration of war on 8 February 1904. However, three hours before Japan's declaration of war was received by the Russian Government, the Japanese Imperial Navy attacked the Russian Far East Fleet at Port Arthur. Tsar Nicholas II was stunned by news of the attack. He could not believe that Japan would commit an act of war without a formal declaration, and had been assured by his ministers that the Japanese would not fight. Russia declared war on Japan eight days later. Japan shrewdly made reference to the Russian attack on Sweden in 1809 without declaration of war, and the requirement to declare war before commencing hostilities was not made international law until after the war had ended, in October 1907, effective from 26 January 1910. Montenegro also declared war against Japan as a gesture of moral support for Russia out of gratitude for Russian support in Montenegro's struggles against the Ottoman Empire. However, for reasons of logistics and distance, Montenegro's contribution to the war effort was limited to the presence of Montenegrins serving in the Russian armed forces. The Qing empire favoured the Japanese position and even offered military aid, but Japan declined it. However, Yuan Shikai sent envoys to Japanese generals several times to deliver foodstuffs and alcoholic drinks. Native Manchurians joined the war on both sides as hired troops.