Oblast in the context of Novgorodsky District

A federated state (also state, province, region, canton, land, governorate, oblast, emirate, or country) is a territorial and constitutional community forming part of a federation. A federated state does not have international sovereignty since powers are divided between the other federated states and the federal government. Unlike international sovereign states, which have what is often referred to as Westphalian sovereignty (such as exercised by their federal government), federated states operate under their domestic or federal law with relation to the rest of the world.

Federated states do not have automatic standing as entities of international law. Instead, the federal union (federation) as a single entity is the sovereign state for purposes of international law. Depending on the constitutional structure of a particular federation, a federated state can hold various degrees of legislative, judicial, and administrative jurisdiction over a defined geographic territory and is a form of regional government. A federated state may nonetheless establish offices internationally, for example, to promote trade or tourism, while still operating only within the trade policy or other applicable law of their federation, and their host country. They also may enter into international regional agreements under the laws of their federation and state, such as to protect a cross-border resource like water or other shared matters.

The Russian Soviet Federative Socialist Republic (Russian SFSR), previously known as the Russian Socialist Federative Soviet Republic (RSFSR) and the Russian Soviet Republic, and unofficially as Soviet Russia, was a socialist state from 1917 to 1922, and afterwards the largest and most populous constituent republic of the Soviet Union (USSR) from 1922 to 1991, until becoming a sovereign part of the Soviet Union with priority of Russian laws over Union-level legislation in 1990 and 1991, the last two years of the existence of the USSR. The Russian SFSR was composed of sixteen smaller constituent units of autonomous republics, five autonomous oblasts, ten autonomous okrugs, six krais and forty oblasts. Russians formed the largest ethnic group. The capital of the Russian SFSR and the USSR as a whole was Moscow and the other major urban centers included Leningrad (Petrograd until 1924), Stalingrad (Volgograd after 1961), Novosibirsk, Sverdlovsk, Gorky and Kuybyshev.

On 7 November 1917 [O.S. 25 October], as a result of the October Revolution, the Russian Soviet Republic was proclaimed as a sovereign state and the world's first constitutionally socialist state guided by communist ideology. The first constitution was adopted in 1918. In 1922, the Russian SFSR signed a treaty officially creating the USSR. On 12 June 1990, the Congress of People's Deputies adopted the Declaration of State Sovereignty. On 12 June 1991, Boris Yeltsin, supported by the Democratic Russia pro-reform movement, was elected the first and only President of the RSFSR, a post that would later become the Presidency of the Russian Federation. The August 1991 Soviet coup d'état attempt in Moscow with the temporary brief internment of President Mikhail Gorbachev destabilised the Soviet Union. Following these events, Gorbachev lost all his remaining power, with Yeltsin superseding him as the pre-eminent figure in the country. On 8 December 1991, the heads of Russia, Ukraine and Belarus signed the Belovezha Accords declaring dissolution of the USSR and established the Commonwealth of Independent States (CIS) as a loose replacement confederation. On 12 December, the agreement was ratified by the Supreme Soviet (the parliament of the Russian SFSR); therefore the Russian SFSR had renounced the Treaty on the Creation of the USSR and de facto declared Russia's independence from the USSR itself and the ties with the other Soviet republics.

The Russia–Ukraine border is the de jure international boundary between Russia and Ukraine. Over land, the border spans five Russian oblasts and five Ukrainian oblasts. Due to the ongoing Russo-Ukrainian War, which began in early 2014, the de facto border between Russia and Ukraine is different from the legal border recognized by the United Nations. As of 2024, Russia is militarily occupying a significant portion of Ukraine, and Ukraine is militarily occupying a very small portion of Russia.

According to a 2016 statement by Viktor Nazarenko, the head of the State Border Guard Service of Ukraine, the Ukrainian government did not have control over 409.3 kilometres (254.3 mi) of the international border with Russia. This stretch of land was formerly controlled by pro-Russian separatists under the Donetsk People's Republic and the Luhansk People's Republic (see War in Donbas), both of which were annexed by Russia in September 2022, seven months after the beginning of the ongoing Russian invasion of Ukraine. Ukraine has also not had authority over the Kerch Strait since 2014, when Russia annexed Crimea; the Ukrainian administration was pushed out of Crimea and Russian checkpoints were set up at the boundary with Kherson Oblast.

The Right-bank Ukraine is a historical and territorial name for a part of modern Ukraine on the right (west) bank of the Dnieper River, corresponding to the modern-day oblasts of Vinnytsia, Zhytomyr, Kirovohrad, as well as the western parts of Kyiv and Cherkasy. It was separated from the left bank during the Ruin.

Right-bank Ukraine is bordered by the historical regions of Volhynia and Podolia to the west, Moldavia to the southwest, Yedisan and Zaporizhzhia to the south, left-bank Ukraine to the east, and Polesia to the north.

The Left-bank Ukraine is a historic name of the part of Ukraine on the left (east) bank of the Dnieper River, comprising the modern-day oblasts of Chernihiv, Poltava and Sumy as well as the eastern parts of Kyiv and Cherkasy.

A krai or kray is one of the types of federal subjects of modern Russia, and was a type of geographical administrative division in the Russian Empire and the Russian SFSR.

Etymologically, the word is related to the verb кроить (kroítǐ [krɐˈitʲ]), meaning 'to cut'. Historically, krais were vast territories located along the periphery of the Russian state, since the word krai also means 'border' or 'edge', i.e., 'a place of the cut-off'. In English the term is often translated as 'territory'. As of 2015, the administrative usage of the term is mostly traditional, as some oblasts also fit this description and there is no difference in constitutional legal status in Russia between the krais and the oblasts.

41°45′N 23°15′E / 41.750°N 23.250°E / 41.750; 23.250

Blagoevgrad Province (Bulgarian: област Благоевград, oblast Blagoevgrad or Благоевградска област, Blagoevgradska oblast), also known as Pirin Macedonia or Bulgarian Macedonia (Bulgarian: Пиринска Македония; Българска Македония), (Pirinska Makedoniya or Bulgarska Makedoniya) is a province (oblast) of southwestern Bulgaria. It borders four other Bulgarian provinces to the north and east, the Greek region of Macedonia to the south, and North Macedonia to the west. The province has 14 municipalities with 12 towns. Its principal city is Blagoevgrad, while other significant towns include Bansko, Gotse Delchev, Melnik, Petrich, Razlog, Sandanski, and Simitli.

42°40′N 23°40′E / 42.667°N 23.667°E / 42.667; 23.667

Sofia Province (Bulgarian: Софийска област, romanized: Sofiyska oblast) is a province (oblast) of Bulgaria. The province does not include Sofia in its territories, but Sofia remains the seat of its administration. The province borders on the provinces of Pernik, Kyustendil, Blagoevgrad, Pazardzhik, Plovdiv, Lovech, Vratsa, Montana, and "Sofia City Province" (which is in a separate oblast, see Sofia Administration), and borders with Serbia to the northwest.

Rostov Oblast (Russian: Росто́вская о́бласть, romanized: Rostovskaya oblastʹ, IPA: [rɐˈstofskəjə ˈobləsʲtʲ]) is a federal subject of Russia (an oblast), located in the Southern Federal District. The oblast has an area of 100,967 square kilometers (38,984 sq mi) and a population of 4,200,729 (2021 Census), making it the sixth most populous federal subject in Russia. Its administrative center is the city of Rostov-on-Don, which also became the administrative center of the Southern Federal District in 2002.

An autonomous oblast (Russian: Автономная область (АО)) is an autonomous form of an oblast (administrative-territorial structure) in the USSR. Of the post-Soviet states, autonomous oblasts currently exist only in Russia (the Jewish Autonomous Oblast) and Tajikistan (the Gorno-Badakhshan).

There were autonomous oblasts of the Soviet Union and later some federal subjects of Russia were autonomous oblasts: the one remaining is the Jewish Autonomous Oblast. Eastern Rumelia was an autonomous province (oblast in Bulgarian, one of its official languages) of the Ottoman Empire. Serb Autonomous Regions are known as oblasts.

Irkutsk Oblast (Russian: Ирку́тская о́бласть, romanized: Irkutskaja oblastʹ; Buryat: Эрхүү можо, romanized: Erhüü možo) is a federal subject of Russia (an oblast), located in southeastern Siberia in the basins of the Angara, Lena, and Nizhnyaya Tunguska Rivers. The administrative center is the city of Irkutsk. It had a population of 2,370,102 at the 2021 Census.

At the top level of administration, Belarus is divided into six regions and one capital city. The six regions are oblasts (also known as voblastsi), while the city of Minsk has a special status as the capital of Belarus. Minsk also serves as the administrative center of Minsk Region.

At the second level, the regions are divided into districts (raions).

Western Belorussia or Western Belarus (Belarusian: Заходняя Беларусь, romanized: Zachodniaja Biełaruś; Polish: Zachodnia Białoruś; Russian: Западная Белоруссия, romanized: Zapadnaya Belorussiya) is a historical region of modern-day Belarus which belonged to the Second Polish Republic during the interwar period. For twenty years before the 1939 invasion of Poland, it was the northern part of the Polish Kresy macroregion. Following the end of World War II in Europe, most of Western Belorussia was ceded to the Soviet Union by the Allies, while some of it, including Białystok, was given to the Polish People's Republic. Until the dissolution of the Soviet Union in 1991, Western Belorussia formed the western part of the Byelorussian Soviet Socialist Republic (BSSR). Today, it constitutes the west of modern Belarus.

Created by the USSR after the conquest of Poland, the new western provinces of Byelorussian SSR acquired from Poland included Baranavichy, Belastok, Brest, Vileyka and the Pinsk Regions. The majority of Belastok Region was returned to Poland and the rest of the regions were reorganized one more time after the Soviet liberation of Belarus into the contemporary western provinces of Belarus which include all of Grodno and Brest regions, as well as parts of today's Minsk and Vitebsk regions. Vilnius was returned by the USSR to the Republic of Lithuania which soon after that became the Lithuanian SSR.

Sakhalin Oblast (Russian: Сахали́нская о́бласть, romanized: Sakhalinskaya oblastʹ, IPA: [səxɐˈlʲinskəjə ˈobləsʲtʲ]) is a federal subject of Russia (an oblast) comprising the island of Sakhalin and the Kuril Islands in the Russian Far East. The oblast has an area of 87,100 square kilometers (33,600 sq mi). Its administrative center and largest city is Yuzhno-Sakhalinsk. As of the 2021 Census, the oblast has a population of 466,609.

The vast majority of the oblast's residents are ethnic Russians, with a small minority of Sakhalin Koreans. Sakhalin Oblast is rich in natural gas and oil, and is Russia's second wealthiest federal subject after the Tyumen Oblast. It borders by sea Khabarovsk Krai to the west and Kamchatka Krai to the north, along with Hokkaido, Japan to the south.

Murmansk Oblast is a federal subject (an oblast) of Russia, located in the northwestern part of the country, with a total land area of 144,900 square kilometres (55,900 sq mi). Its only internal border is the Republic of Karelia to the south, and it is bordered internationally by Finland to the west and Norway to the northwest and the Barents Sea lies to the north and White Sea lies to the south and east. Its administrative center is the city of Murmansk. As of the 2010 Census, its population was 795,409; however, at the 2021 Census, the population had declined to 667,744.

In the Union of Soviet Socialist Republics (USSR), national delimitation was the process of specifying well-defined national territorial units (Soviet socialist republics [SSR], autonomous Soviet socialist republics [ASSR], autonomous oblasts [provinces], raions [districts] and okrugs [circuits]) from the ethnic diversity of the USSR and its subregions.

The Russian-language term for this Soviet state policy was razmezhevanie (Russian: национально-территориальное размежевание, natsionalno-territorialnoye razmezhevaniye), which is variously translated in English-language literature as "national-territorial delimitation" (NTD), "demarcation", or "partition". National delimitation formed part of a broader process of changes in administrative-territorial division, which also changed the boundaries of territorial units, but was not necessarily linked to national or ethnic considerations.