Luhansk People's Republic in the context of "Russo-Ukrainian War"

This is a list of cities and towns in Russia and parts of the Russian-occupied territories of Ukraine with a population of over 50,000 as of the 2021 Census. The figures are for the population within the limits of the city/town proper, not the urban area or metropolitan area.

The list includes Sevastopol and settlements within the Republic of Crimea which are internationally recognized as part of Ukraine and were not subject to the 2010 census. Additionally, settlements within the Donetsk People's Republic, Kherson Oblast, Luhansk People's Republic, and Zaporozhye Oblast, are internationally recognized as part of Ukraine and were not subject to the 2010 census. Only settlements presently controlled by Russia are included; settlements under the control of Ukraine are not included. The city of Zelenograd (a part of the federal city of Moscow) and the municipal cities/towns of the federal city of St. Petersburg are also excluded, as they are not enumerated in the 2021 census as stand-alone localities. The sixteen largest cities (cities with over 1,000,000 inhabitants) have a total population of 35,509,177, or roughly 24.1% of the country's total population.

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.

On 24 February 2022, during the Russo-Ukrainian war, Russia launched a full-scale invasion of Ukraine, starting the current phase of the war, the largest conflict in Europe since World War II. By April 2022, the invasion's initial goal of a rapid Russian victory via decapitation had failed, with Ukraine pushing back the northern arm of the invasion and preventing the capture of Kyiv. Following this, the war transitioned to more conventional fighting in the south and east of Ukraine.

In a televised address, Russian president Vladimir Putin announced the invasion, calling it a "special military operation". He said that its purpose was to support the Russian-backed breakaway republics of Donetsk and Luhansk, whose paramilitary forces had been fighting Ukraine in the war in Donbas since 2014. Putin espoused irredentist and imperialist views challenging Ukraine's legitimacy as a state, baselessly claimed that the Ukrainian government was neo-Nazis committing genocide against the Russian minority in the Donbas, and said that Russia's goal was to "demilitarise and denazify" Ukraine.

The war in Donbas, or the Donbas war, was a phase of the Russo-Ukrainian war in the eastern Donbas region of Ukraine. The war began in April 2014, when Russian paramilitaries seized several towns. Ukraine's military launched an operation against them, but failed to fully retake the territory. Covertly, Russia's military were directly involved, and the separatists were largely under Russian control. The war continued until it was subsumed by the full-scale Russian invasion of Ukraine in 2022.

In March 2014, following Ukraine's Revolution of Dignity, Russia occupied Crimea. Anti-revolution and pro-Russian protests began in Ukraine's Donetsk and Luhansk provinces, collectively 'the Donbas'. On 12 April, a commando unit led by Russian citizen Igor 'Strelkov' Girkin seized Sloviansk and other settlements in the Donbas. Separatists declared the Donetsk and Luhansk republics (DPR and LPR) as independent states. Russia covertly supported them with troops and weaponry. It only admitted sending "military specialists", but later acknowledged the separatists as Russian combat veterans. On 15 April, Ukraine began an "Anti-Terrorist Operation" (ATO). By August 2014, Ukraine had re-taken most of its territory. Russia responded by covertly sending troops, tanks and artillery into the Donbas, helping pro-Russian forces regain much of what they had lost. DPR leader Alexander Borodai said 50,000 Russian citizens had fought for the separatists by mid 2015, excluding the regular Russian troops that invaded.

Russian separatist forces in Ukraine, primarily the People's Militias of the Donetsk People's Republic (DPR) and the Luhansk People's Republic (LPR), were pro-Russian paramilitaries in the Donbas region of eastern Ukraine. They were under the overall control of the Russian Federation. They were also referred to as Russian proxy forces. They were active during the war in Donbas (2014–2022), the first stage of the Russo-Ukrainian War. They then supported the Russian Armed Forces against the Ukrainian Armed Forces during the 2022 Russian invasion. In September 2022, Russia annexed the DPR and LPR, and began integrating the paramilitaries into its armed forces. They are designated as terrorist groups by the government of Ukraine.

The separatist paramilitaries were formed during the 2014 pro-Russian unrest in Ukraine. The Donbas People's Militia was formed in March 2014 by Pavel Gubarev, who proclaimed himself "People's Governor" of Donetsk Oblast, while the Army of the South-East was formed in Luhansk Oblast. The Donbas war began in April 2014 after these groups seized Ukrainian government buildings in the Donbas, leading the Ukrainian military to launch its Anti-Terrorist Operation against them.

On 24 February 2022, Russia invaded Ukraine, starting the largest and deadliest war in Europe since World War II. It is a major escalation of the war between the two countries that began in 2014. The fighting has caused hundreds of thousands of military casualties and tens of thousands of Ukrainian civilian casualties. As of 2025, Russian troops occupy about 20% of Ukraine. From a population of 41 million, about 8 million Ukrainians had been internally displaced and more than 8.2 million had fled the country by April 2023, creating Europe's largest refugee crisis since World War II.

In late 2021, Russia massed troops near Ukraine's borders and issued demands to the West, including a ban on Ukraine ever joining NATO. After repeatedly denying having plans to attack Ukraine, on 24 February 2022, Russian president Vladimir Putin announced a "special military operation", saying that it was to support the Russian-backed breakaway republics of Donetsk and Luhansk, whose paramilitary forces had been fighting Ukraine in the war in Donbas since 2014. Putin espoused irredentist and imperialist views challenging Ukraine's legitimacy as a state, baselessly claimed that the Ukrainian government were neo-Nazis committing genocide against the Russian minority in the Donbas, and said that Russia's goal was to "demilitarise and denazify" Ukraine. Russian air strikes and a ground invasion were launched on a northern front from Belarus towards the capital Kyiv, a southern front from occupied Crimea, and an eastern front from the Donbas towards Kharkiv. Ukraine enacted martial law, ordered a general mobilisation, and severed diplomatic relations with Russia.

The Order of the Red Banner Southern Military District (Russian: Южный военный округ, romanized: Yuzhnyy voyennyy okrug) is a military district of Russia.It is one of the five military districts of the Russian Armed Forces, with its jurisdiction primarily within the North Caucasus region of the country, and Russian bases in South Caucasian post-Soviet states. The Southern Military District was created as part of the 2008 military reforms, and founded by Presidential Decree №1144 signed on September 20, 2010, to replace the North Caucasus Military District, and absorbing the military commands of the Black Sea Fleet and Caspian Flotilla. The district began operation on October 22, 2010, under the command of Colonel-General Aleksandr Galkin.

The Southern Military District is the smallest military district in Russia by geographic size. The district contains 13 federal subjects of Russia: Adygea, Astrakhan Oblast, Chechnya, Dagestan, Ingushetia, Kabardino-Balkaria, Kalmykia, Karachay-Cherkessia, Krasnodar Krai, North Ossetia-Alania, Rostov Oblast, Stavropol Krai and Volgograd Oblast. After the full-scale Russian invasion of Ukraine was launched on 24 February 2022, six oblasts of Ukraine, partially occupied by Russia, were announced as being added to the district: the Crimea, Donetsk, Kherson, Lugansk, Sevastopol and Zaporozhye. These territories are components of Ukraine which since early 2022 have been partially or fully militarily occupied by Russian military forces.