[2] After the Russo-Japanese War, the First Treaty was signed on 30 July 1907 by Motono Ichirō, the Japanese Ambassador in Moscow, and Alexander Izvolsky, the Foreign Minister of Russia.
[3] The Second Russo-Japanese Treaty was signed on 4 July 1910 by Motono Ichirō, the Japanese Ambassador in Moscow, and Alexander Izvolsky, the Russian Minister of Foreign Affairs, which explicitly rejected the United States' proposed South Manchurian Railway Neutrality Act (the Knox's proposal) and ensured the rights and interests of both sides in Manchuria.
[6] On 3 July 1916, Ambassador Motono Ichirō and Russian Foreign Minister Sergei Sazonov signed the Fourth Treaty, which strengthened the alliance between the two countries during World War I and protected their rights and interests in Manchuria and Mongolia from Chinese challenges.
In order to avoid clashes with the Japanese Empire, some level of cooperation similar to that existing under the secret treaties had to be reestablished.
But on the other hand, both the Tsarist Empire and the Soviet Union were wary of Japanese power in Manchuria due to Russia's defeat in the Russo-Japanese War, and in the forty years following the Russo-Japanese War, the Tsarist and later Soviet governments were careful to maintain a balance of power with Japan in the Far East and did not offend Japanese interests in Southern Manchuria and Inner Mongolia.