Trans-Siberian Railway imperial collapse, and before the Red Army took control, the Czechs and Slovaks were able to use their organisation and the resources of the railway to establish a temporary zone of control before eventually continuing onwards towards Vladivostok, from where they emigrated back to Czechoslovakia. During World War II, the Trans-Siberian Railway played an important role in the supply of the powers fighting in Europe. During the first two years of the war the USSR had secretly agreed to a neutrality and non-aggression pact with Germany. While Germany's merchant shipping was interdicted by the Western allies, the Trans-Siberian Railway (along
Chinese Eastern Railway the west as Port Arthur, and the Russo-Japanese War (1904–1905) was fought largely over who would possess this region and its excellent harbor, as well as whether it would remain open to traders of all nations (Open Door Policy). The Chinese Eastern Railway was essentially completed in 1902, a few years earlier than the stretch around Lake Baikal. Until the Circumbaikal portion was completed (1904–1905; double-tracked, 1914), goods carried on the Trans-Siberian Railway had to be trans-shipped by ferry almost a hundred kilometers across the lake (from Port Baikal to Mysovaya). The Chinese Eastern Railway became important in international relations.