Collapse of the Soviet Union in the context of "Supreme Soviet of the Soviet Union"

World War II was the deadliest military conflict in history. An estimated total of 70–85 million deaths were caused by the conflict, representing about 3% of the estimated global population of 2.3 billion in 1940. Deaths directly caused by the war (including military and civilian fatalities) are estimated at 50–56 million, with an additional estimated 19–28 million deaths from war-related disease and famine. Civilian deaths totaled 50–55 million. Military deaths from all causes totaled 21–25 million, including deaths in captivity of about 5 million prisoners of war. More than half of the total number of casualties are accounted for by the dead of the Republic of China and of the Soviet Union. The following tables give a detailed country-by-country count of human losses.

Recent historical scholarship has shed new light on the topic of Second World War casualties. Research in Russia since the collapse of the Soviet Union has caused a revision of estimates of Soviet World War II fatalities. According to Russian government figures, USSR losses within postwar borders now stand at 26.6 million, including 8 to 9 million due to famine and disease. In August 2009 the Polish Institute of National Remembrance (IPN) researchers estimated Poland's dead at between 5.6 and 5.8 million. Historian Rüdiger Overmans of the Military History Research Office (Germany) published a study in 2000 estimating the German military dead and missing at 5.3 million, including 900,000 men conscripted from outside of Germany's 1937 borders, in Austria, and in east-central Europe. The Red Army claimed responsibility for the majority of Wehrmacht casualties during World War II. The People's Republic of China puts its war dead at 20 million, while the Japanese government puts its casualties due to the war at 3.1 million. An estimated 7–10 million people died in the Dutch, British, French and US colonies in South and Southeast Asia, mostly from war-related famine.

Nationalism studies is an interdisciplinary academic field devoted to the study of nationalism and related issues. While nationalism has been the subject of scholarly discussion since at least the late eighteenth century, it is only since the early 1990s that it has received enough attention for a distinct field to emerge.

Authors such as Eric Hobsbawm, Carlton J. H. Hayes, Hans Kohn, Elie Kedourie, John Hutchinson, Ernest Gellner, Karl Deutsch, Walker Connor, Anthony D. Smith, and Benedict Anderson laid the foundation for nationalism studies in the post-war period. In the early 1990s their ideas were enthusiastically taken up by academics, journalists, and others looking to understand and explain the apparent resurgence of nationalism marked by events such as the collapse of the Soviet Union, the Rwanda genocide, and the Yugoslav Wars.

In world-systems theory, core countries (or the imperial core) are the industrialized capitalist and/or imperialist countries. Core countries control and benefit the most resources from the global market. They are usually recognized as wealthy states with a wide variety of resources and are in a favorable location compared to other states. They have strong state institutions, a powerful military, and powerful global political alliances. In the 20th-21st centuries they consist of Australia, New Zealand, Canada, Western European countries, Japan, the United Kingdom, and the United States. The population of the core countries is on average by far the wealthiest of the world, with the highest life expectancy, literacy rate, best education and social welfare on the planet.

Core countries do not always stay "core" permanently. Throughout world history, core countries have been changing, and new ones have been added to the "core" list. These were the Asian, Indian, and Middle Eastern empires in the ages up to the 16th century; prominently Medieval India and the Chinese Empire, which were the richest regions in the world until the European Great Powers took the lead during the early modern period, although the major Asian powers were still very influential in the region. Europe remained ahead of the pack until the 20th century, when the two World Wars were disastrous for the European economies. It was then that the victorious United States and Soviet Union, up to the late 1980s, became the two hegemonic powers, creating a bipolar world order during the Cold War. In 1991, the collapse of the Soviet Union left the United States as the world’s sole remaining superpower, sometimes referred to as a hyperpower.

Relations between the Soviet Union and the United States were fully established in 1933 as the succeeding bilateral ties to those between the Russian Empire and the United States, which lasted from 1809 until 1917; they were also the predecessor to the current bilateral ties between the Russian Federation and the United States that began in 1992 after the end of the Cold War.

The relationship between the Soviet Union and the United States was largely defined by mistrust and hostility. The invasion of the Soviet Union by Germany as well as the attack on the U.S. Pacific Fleet at Pearl Harbor by Imperial Japan marked the Soviet and American entries into World War II on the side of the Allies in June and December 1941, respectively. As the Soviet–American alliance against the Axis came to an end following the Allied victory in 1945, the first signs of post-war mistrust and hostility began to immediately appear between the two countries, as the Soviet Union militarily occupied Eastern European countries and turned them into satellite states, forming the Eastern Bloc. These bilateral tensions escalated into the Cold War, a decades-long period of tense hostile relations with short phases of détente that ended after the collapse of the Soviet Union and emergence of the present-day Russian Federation at the end of 1991.

The South Ossetian Autonomous Oblast (Russian: Юго-Осетинская автономная область, romanized: Yugo-Osetinskaya avtonomnaya oblast'; Georgian: სამხრეთ ოსეთის ავტონომიური ოლქი, romanized: samkhret osetis avt'onomiuri olki; Ossetian: Хуссар Ирыстоны автономон бӕстӕ, romanized: Xussar Irystony avtonomon bæstæ) was an autonomous oblast of the Soviet Union created within the Georgian SSR on April 20, 1922. It was an ethnic enclave created for the Ossetians within Georgia by Soviets as a reward for their political loyalty during the 1921 Soviet invasion of Georgia. Following the collapse of the Soviet Union and the South Ossetia war, its territory is controlled by the self-proclaimed Republic of South Ossetia, which is recognized only by five states, while Georgia and other countries consider it to be territory of Georgia.

The population of the South Ossetian AO consisted mostly of ethnic Ossetians, who made up roughly 66% of the 100,000 people living there in 1989, and Georgians, who constituted a further 29% of the population as of 1989.

The People's Liberation Army Navy (PLAN), also known as the PLA Navy, People's Navy or simply Chinese Navy, is the naval warfare branch of the People's Liberation Army, the national military of the People's Republic of China. It is composed of five sub-branches: the Surface Force, the Submarine Force, the Coastal Defense Force, the Marine Corps and the Naval Air Force, with a total strength of 384,000 personnel, including 55,000 marines and 50,000 naval aviation personnel. The PLAN's combat units are deployed among three theater command fleets, namely the North Sea, East Sea and South Sea Fleet, which serve the Northern, Eastern and Southern Theater Command, respectively.

The PLAN was formally established on 23 April 1949 and traces its lineage to maritime fighting units during the Chinese Civil War, including many elements of the Republic of China Navy which had defected. Until the late 1980s, the PLAN was largely a riverine and littoral force (brown-water navy) mostly in charge of coastal defense and patrol against potential Nationalist amphibious invasions and territorial waters disputes in the East and South China Sea (roles that are now largely relegated to the paramilitary China Coast Guard), and had been traditionally a maritime support subordinate to the PLA Ground Force. Following the collapse of the Soviet Union, the Chinese leadership were freed from overland border concerns with the northern neighbor and shifted towards more forward-oriented foreign and national security policies in the 1990s, and the PLAN leaders were able to advocate for renewed attention toward limited command of the seas as a green-water navy operating in the marginal seas within the range of coastal air parity.

The administrative-command system (Russian: Административно-командная система, romanized: Administrativno-komandnaya sistema), also known as the command-administrative system, is the system of management of an economy of a state characterized by the rigid centralization of economic planning and distribution of goods, based on the state ownership of the means of production and carried out by the governmental and communist party bureaucracies ("nomenklatura") in the absence of a market economy.

The term is used to describe the economy of the Soviet Union and the economies of the Soviet Bloc which closely followed the Soviet model. In his 2004 book The Political Economy of Stalinism: Evidence from the Soviet Secret Archives, Paul Roderick Gregory argues that the collapse of the Soviet Union was due to the inherent drawbacks of the system, namely poor planning, low expertise of planners, unreliable supply lines, conflict between planners and producers and the dictatorial chain of command. Gregory writes that "the system was managed by thousands of 'Stalins' in a nested dictatorship".

A propiska (Russian: пропи́ска, IPA: [prɐˈpʲiskə] , plural: propiski) was both a written residency permit and a migration-recording tool, used in the Russian Empire before 1917 and in the Soviet Union from 1932 until 1991.

The USSR had both permanent (прописка по месту жительства or постоянная прописка) and temporary (временная прописка) propiskas. In the transition period to a market economy in the aftermath of the collapse of the Soviet Union in late 1991, the permanent propiska in municipal apartments was a factor that allowed dwellers to obtain private-property rights on the living space they were "inscripted" in during privatization. Those who built housing at their own expense obtained a permanent propiska there by definition.

The First Main Directorate (Russian: Пе́рвое гла́вное управле́ние, romanized: Pérvoye glávnoye upravléniye, IPA: [ˈpʲervəjə ˈɡɫavnəjə ʊprɐˈvlʲenʲɪje], lit. 'First Chief Directive') of the Committee for State Security under the USSR council of ministers (PGU KGB) was the organization responsible for foreign operations and intelligence activities by providing for the training and management of covert agents, intelligence collection administration, and the acquisition of foreign and domestic political, scientific and technical intelligence for the Soviet Union.

The First Chief Directorate was formed within the KGB directorate in 1954, and after the collapse of the Soviet Union became the Foreign Intelligence Service (SVR RF).