of foreign-owned property and confiscation of foreign assets, and Entente forces landing on Russian territory, the Soviets and Germany signed an additional agreement on 27 August 1918. The Soviets agreed to pay six billion marks in compensation for German losses. The amount was equal to 300 million rubles. The Soviets additionally agreed to sell Germany 25% of the output of the Baku oil fields. Three secret clauses provided for German military action against Entente forces on Russian soil, as well as the expulsion of British troops from Baku. Lasting effects The treaty meant that Russia now was helping Germany win the war by freeing up a million German soldiers for the Western Front and by "relinquishing much of Russia's food supply, industrial base, fuel supplies, and communications with Western Europe". According to historian Spencer Tucker, the Allied Powers felt thatThe treaty was the ultimate betrayal of the Allied cause and sowed the seeds for the Cold War. With Brest-Litovsk, the spectre of German domination in Eastern Europe threatened to become reality, and the Allies now began to think seriously about military intervention [in Russia].For the Western Allied Powers, the terms that Germany had imposed on Russia were interpreted as a warning of what to expect if the Central Powers won the war. Between Brest-Litovsk and the point when the situation in the Western Front became dire, some officials in the German government and the high command began to favour offering more lenient terms to the Allied Powers in exchange for their recognition of German gains in the east. The treaty marked a significant contraction of the territory controlled by the Bolsheviks or that they could lay claim to as effective successors of the Russian Empire. While the independence of Poland was already accepted by them in principle, and Lenin had signed a document accepting the Finnish independence, the loss of Ukraine and the Baltics created, from the Bolshevik perspective, dangerous bases of anti-Bolshevik military activity in the subsequent Russian Civil War (1917–1923). However, Bolshevik control of Ukraine and Transcaucasia was at the time fragile or non-existent. Many Russian nationalists and some revolutionaries were furious at the Bolsheviks' acceptance of the treaty and joined forces to fight them. Non-Russians who inhabited the lands lost by Bolshevik Russia in the treaty saw the changes as an opportunity to set up independent states. Immediately after the signing of the treaty, Lenin moved the