Foreign relations of the Soviet Union

After the Russian Revolution, in which the Bolsheviks took over parts of the collapsing Russian Empire in 1918, they faced enormous odds against the German Empire and eventually negotiated terms to pull out of World War I. They then went to war against the White movement, pro-independence movements, rebellious peasants, former supporters, anarchists and foreign interventionists in the bitter civil war. They set up the Soviet Union in 1922 with Vladimir Lenin in charge. At first, it was treated as an unrecognized pariah state because of its repudiating of tsarist debts and threats to destroy capitalism at home and around the world. By 1922, Moscow had repudiated the goal of world revolution, and sought diplomatic recognition and friendly trade relations with the capitalist world, starting with Britain and Germany. Finally, in 1933, the United States gave recognition. Trade and technical help from Germany and the United States arrived in the late 1920s. After Lenin died in 1924, Joseph Stalin, became leader. He transformed the country in the 1930s into an industrial and military power. It strongly opposed Nazi Germany until August 1939, when it suddenly came to friendly terms with Berlin in the Molotov–Ribbentrop Pact. Moscow and Berlin by agreement invaded and partitioned Poland and the Baltic States. Stalin ignored repeated warnings that Hitler planned to invade. He was caught by surprise in June 1941 when Nazi Germany invaded the Soviet Union. The Soviet forces nearly collapsed as the Germans reached the outskirts of Leningrad and Moscow. However, the Soviet Union proved strong enough to defeat Nazi Germany, with help from its key World War II allies, Britain and the United States. The Soviet army occupied most of Eastern Europe (except Yugoslavia) and increasingly controlled the governments.

In 1945, the USSR became one of the five permanent members of the United Nations Security Council along with the United States, Britain, France, and China, giving it the right to veto any of the Security Council's resolutions (see Soviet Union and the United Nations). By 1947, American and European anger at Soviet military occupation of the Eastern European states led to a Cold War, with Western Europe rebuilt economically with the help of the Marshall Plan from Washington. Opposition to the danger of Soviet expansion formed the basis of the NATO military alliance in 1949. There was no hot war, but the Cold War was fought diplomatically and politically across the world by the Soviet and NATO blocks.

The Kremlin controlled the satellite states that it established in the parts of Eastern Europe its army occupied in 1945. After eliminating all opposition and purging the leadership, it linked them to the USSR in terms of economics through Comecon and later the military through the Warsaw Pact. In 1948, relations with Yugoslavia disintegrated over mutual distrust between Stalin and Tito. A similar split happened with Albania in 1955. Like Yugoslavia and Albania, China was never controlled by the Soviet Army. The Kremlin wavered between the two factions fighting the Chinese Civil War, but ultimately supported the winner, Mao Zedong. Stalin and Mao both supported North Korea in its invasion of South Korea in 1950. But the United States and the United Nations mobilized the counterforce in the Korean War (1950–1953). Moscow provided air support but no ground troops; China sent in its large army that eventually stalemated the war. By 1960, disagreements between Beijing and Moscow had escalated out of control, and the two nations became bitter enemies in the contest for control of worldwide communist activities.

Tensions between the Soviet Union and the United States reached an all-time high during the 1962 Cuban Missile Crisis, in which Soviet missiles were placed on the island of Cuba well within range of US territory. This was retrospectively viewed as the closest the world ever came to a nuclear war. After the crisis was resolved, relations with the United States gradually eased into the 1970s, reaching a degree of détente as both Moscow and Beijing sought American favor.

In 1979, a communist government was installed by the USSR in Afghanistan, but was hard-pressed and requested military help from Moscow. The Soviet army intervened to support the regime, but found itself in a major confrontation. The presidency of Ronald Reagan in the United States was marked by opposition to the Soviet Union, and mobilized its allies to support the guerrilla war against the Soviets in Afghanistan. The goal was to create something akin to the Vietnam War, which would drain Soviet forces and morale. When Mikhail Gorbachev became the leader of the Soviet Union in 1985, he sought to restructure the Soviet Union to resemble the Scandinavian model of western social democracy and thus create a private sector economy. He withdrew Soviet troops from Afghanistan in 1989 and began a hands-off approach in the USSR's relations with its Eastern European satellites. This was well received by the United States, but it led to the breakaway of the Eastern European satellites in 1989, and the final collapse and dissolution of the USSR in 1991. The new Russia, under Boris Yeltsin, succeeded the Soviet Union.

The Ministry of Foreign Affairs implemented the foreign policies set by Stalin and after his death by the Politburo. Andrei Gromyko served as the Minister of Foreign Affairs for nearly thirty years (1957–1985), being the longest-serving foreign minister in the world.