Ukraine

30 October 1941 – 4 July 1942

The siege of Sevastopol, also known as the defence of Sevastopol (Russian: Оборона Севастополя, romanized: Oborona Sevastopolya) or the Battle for Sevastopol (German: Schlacht um Sewastopol; Romanian: Bătălia de la Sevastopol; Russian: Битва за Севастополь, romanized: Bitva za Sevastopol'), was a military engagement that took place on the Eastern Front of the Second World War. The campaign was fought by the Axis powers of Germany and Romania against the Soviet Union for control of Sevastopol, a port in Crimea on the Black Sea.

12 May 1942 – 29 May 1942

The Second Battle of Kharkov or Operation Fredericus was an Axis counter-offensive in the region around Kharkov against the Red Army Izium bridgehead offensive conducted 12–28 May 1942, on the Eastern Front during World War II. Its objective was to eliminate the Izium bridgehead over Seversky Donets or the "Barvenkovo bulge" (Russian: Барвенковский выступ, romanized: Barvenkovsky vystup) which was one of the Soviet offensive's staging areas. After a winter counter-offensive that drove German troops away from Moscow but depleted the Red Army's reserves, the Kharkov offensive was a new Soviet…

19 February 1943 – 15 March 1943

The Third Battle of Kharkov was a series of battles on the Eastern Front of World War II, undertaken by Nazi Germany's Army Group South against the Soviet Red Army, around the city of Kharkov from 19 February to 15 March 1943. Known to the German side as the Donets Campaign and in the Soviet Union as the Donbass and Kharkov operations, the German counterstrike led to the recapture of the cities of Kharkov and Belgorod.

8 December 1991

The Agreement on the creation of the Commonwealth of Independent States (officially), or unofficially the Minsk Agreement and best known as the Belovezha Accords, is the agreement declaring that the Soviet Union (USSR) had effectively ceased to exist and establishing the Commonwealth of Independent States (CIS) in its place as an organization created by the same Union Republics. The documentation was signed at the state dacha near Viskuli in Belovezhskaya Pushcha, Belarus on 8 December 1991, by leaders of three of the four republics (except for the defunct Transcaucasian SFSR) which had…

2010s – 23 February 2014

Euromaidan (; Ukrainian: Євромайдан, romanised: Yevromaidan, IPA: [ˌjɛu̯romɐjˈdɑn], lit. 'Euro Square'), or the Maidan Uprising, was a wave of demonstrations and civil unrest in Ukraine, which began on 21 November 2013 with large protests in Maidan Nezalezhnosti (Independence Square) in Kyiv. The protests were sparked by President Viktor Yanukovych's sudden decision not to sign the European Union–Ukraine Association Agreement, instead choosing closer ties to Russia and the Eurasian Economic Union.

2014

In February and March 2014, Russia invaded the Crimean Peninsula of Ukraine, occupied it, and then annexed it after an illegitimate referendum. This took place amid the uncertainty that immediately followed Ukraine's Revolution of Dignity.

23 February 2014 – 22 June 2014

From the end of February 2014, in the aftermath of the Euromaidan and the Revolution of Dignity, which resulted in the ousting of Russian-leaning Ukrainian president Viktor Yanukovych, demonstrations by Russian-backed, pro-Russian, and anti-government groups (as well as pro-government demonstrations) took place in Crimea, Donetsk, Luhansk, Kharkiv, and Odesa. The unrest, which was supported by the Russian military and intelligence services, belongs to the early stages of the Russo-Ukrainian war.

12 April 2014 – 24 February 2022

The war in Donbas, also called 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-backed paramilitaries began an uprising against the Ukrainian government, seized territory and declared independent states.

1 December 2019

The global COVID-19 pandemic (also known as the coronavirus pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an outbreak in Wuhan, China, in December 2019. It spread to other parts of Asia and then worldwide in early 2020.

2020s – 17 February 2024

The Battle of Avdiivka was a major battle between the Russian and Ukrainian Armed Forces for control of Avdiivka, a city in Donetsk Oblast, during the Russo-Ukrainian war (2022–present). After more than a year and a half of intermittent fighting along the city's outskirts, Russian forces launched an offensive to capture Avdiivka on 10 October 2023, resulting in what was considered one of the bloodiest and fiercest battles of the war.