Comecon in the context of "Czechoslovakia"

The Warsaw Pact (WP), formally the Treaty of Friendship, Cooperation and Mutual Assistance (TFCMA), was a collective defense treaty signed in Warsaw, Poland, between the Soviet Union and seven other Eastern Bloc socialist republics in Central and Eastern Europe in May 1955, during the Cold War. The term "Warsaw Pact" commonly refers to both the treaty itself and its resultant military alliance, the Warsaw Pact Organisation (WPO) (also known as ‘Warsaw Treaty Organization’ (‘WTO’)). The Warsaw Pact was the military complement to the Council for Mutual Economic Assistance (Comecon), the economic organization for the Eastern Bloc states.

Dominated by the Soviet Union, the Warsaw Pact was established as a balance of power or counterweight to the North Atlantic Treaty Organization (NATO) and the Western Bloc. There was no direct military confrontation between the two organizations; instead, the conflict was fought on an ideological basis and through proxy wars. Both NATO and the Warsaw Pact led to the expansion of military forces and their integration into the respective blocs. The Warsaw Pact's largest military engagement was the Warsaw Pact invasion of Czechoslovakia, one of its own member states, in August 1968. All member states participated except for Albania and Romania, resulting in Albania's withdrawal from the pact less than one month later. The pact began to unravel with the spread of the Revolutions of 1989 through the Eastern Bloc, beginning with the Solidarity movement in Poland, its electoral success in June 1989 and the Pan-European Picnic in August 1989.

The Eastern Bloc, also known as the Communist Bloc (Combloc), the Socialist Bloc, the Workers Bloc, and the Soviet Bloc, was an unofficial coalition of Communist states of Central and Eastern Europe, Asia, Africa, and Latin America that were aligned with the Soviet Union and existed during the Cold War (1947–1991). These states followed the ideology of Marxism–Leninism and various types of socialism, in opposition to the capitalist Western Bloc. The Eastern Bloc was often called the "Second World", whereas the term "First World" referred to the Western Bloc and "Third World" referred to the non-aligned countries that were mainly in Africa, Asia, and Latin America but notably also included former pre-1948 Soviet ally Yugoslavia, which was located in Europe.

In Western Europe, the term Eastern Bloc generally referred to the USSR and Central and Eastern European countries in the Comecon (East Germany, Poland, Czechoslovakia, Hungary, Romania, Bulgaria, and Albania). In Asia, the Eastern Bloc comprised Mongolia, Vietnam, Laos, Kampuchea, North Korea, South Yemen and China. In the Americas, the countries aligned with the Soviet Union included Cuba from 1961 and for limited periods Nicaragua and Grenada.

The People's Republic of Bulgaria (PRB; Bulgarian: Народна република България, НРБ, romanized: Narodna republika Bŭlgariya, NRB; pronounced [nɐˈrɔdnɐ rɛˈpublikɐ bɐɫˈɡarijɐ]) was the Bulgarian state existed from 1946 to 1990, ruled by the Bulgarian Communist Party (BCP; Bulgarian: Българска комунистическа партия (БКП)) together with its coalition partner, the Bulgarian Agrarian People's Union. Bulgaria was also part of Comecon as well as a member of the Warsaw Pact. The Bulgarian resistance movement during World War II deposed the Tsardom of Bulgaria administration in the Bulgarian coup d'état of 1944 which ended the country's alliance with the Axis powers and led to the People's Republic in 1946.

The BCP modeled its policies after those of the Soviet Union, transforming the country over the course of a decade from an agrarian peasant society into an industrialized socialist society. In the mid-1950s and after the death of Stalin, the party's hardliners lost influence and a period of social liberalization and stability followed under Todor Zhivkov. Varying degrees of conservative or liberal influence followed. After a new energy and transportation infrastructure was constructed, by 1960 manufacturing became the dominant sector of the economy and Bulgaria became a major exporter of household goods and later of computer technologies, earning it the nickname of "Silicon Valley of the Eastern Bloc". The country's relatively high productivity levels and high scores on social development rankings made it a model for other socialist countries' administrative policies.

A satellite state or dependent state is a country that is formally independent but under heavy political, economic, and military influence or control from another country. The term was coined by analogy to planetary objects orbiting a larger object, such as smaller moons revolving around larger planets, and is used mainly to refer to Central and Eastern European member states of the Warsaw Pact during the Cold War, as well as to Mongolia and Tuva between 1924 and 1990, all of which were economically, culturally, and politically dominated by the Soviet Union. While primarily referring to the Soviet-controlled states in Central and Eastern Europe or Asia, in some contexts the term also refers to other countries under Soviet hegemony during the Cold War, such as North Korea (especially in the years surrounding the Korean War of 1950–1953), Cuba (particularly after it joined the Comecon in 1972), North Vietnam during the Vietnam War, and some countries in the American sphere of influence, such as South Vietnam during 1964–1973. In Western usage, the term has seldom been applied to states other than those in the Soviet orbit. In Soviet usage, the term applied to states in the orbit of Nazi Germany, Fascist Italy, and Imperial Japan, whereas in the West the term to refer to those has typically been client states.

The Oxford English Dictionary traces the concept of satellite states in English back as early as 1780. In times of war or political tension, satellite states sometimes served as buffers between an enemy country and the nation exerting control over the satellites.

The de-satellization of the Socialist Republic of Romania from the Soviet Union was the release of Romania from its Soviet satellite status in the 1960s. The Romanian leadership achieved the de-satellization partly by taking advantage of Nikita Khrushchev's errors and vulnerabilities. Romania's independence was tolerated by Moscow because its ruling party was not going to abandon communism. Although Romania remained a member of both the Warsaw Pact and Comecon, it was not to be a docile member of either.

Even before Nicolae Ceaușescu came to power, Romania was a genuinely independent country, as opposed to the rest of the Warsaw Pact. To some extent, it was even more independent than Cuba (a socialist state that was not a member of the Warsaw Pact). The Romanian regime was largely impervious to Soviet political influence, and Ceaușescu was the only declared opponent of glasnost and perestroika. Due to the conflictual relationship between Bucharest and Moscow, the West did not hold the Soviet Union responsible for the policies pursued by Romania, as it did for other countries in the region such as Czechoslovakia and Poland. At the start of 1990, Soviet foreign minister Eduard Shevardnadze implicitly confirmed the lack of Soviet influence over Ceaușescu's Romania. When asked whether it made sense for him to visit Romania less than two weeks after its revolution, Shevardnadze insisted that only by going in person to Romania could he figure out how to "restore Soviet influence".