(from the CIA World Factbook)
Area: 603,550 sq km (slightly smaller than Texas)
Population: 43,528,136 (June 2022 est.)
Median age: 41.2 years old
Ethnic Groups: Ukrainian 77.8%, Russian 17.3%, Belarusian 0.6%, Moldovan 0.5%, Crimean Tatar 0.5%, Bulgarian 0.4%, Hungarian 0.3%, Romanian 0.3%, Polish 0.3%, Jewish 0.2%, and other 1.8% (2001 est.)
Unemployment: 8.9% (2019 est.)
Prior to the 20th century, Ukrainian territories were controlled at different times by Russia, Poland, Lithuania, Mongols, Cossacks and others.
From the 18th to 20th centuries, Russia and the Soviet Union carried out a program of Russification to discourage Ukrainian national identity.
1917-1920 - Following the 1917 Russian Revolution and toward the end of World War I, Ukraine is briefly an independent nation.
1920s - Ukraine becomes part of the Union of Soviet Socialist Republics.
1921-1922 - A famine kills more than one million people.
1932-1933 - Soviet leader Joseph Stalin’s policy of collectivization leads to the Great Famine (Holodomor) in which millions of Ukrainians die of starvation.
1941 - During World War II, Germany invades Ukraine. More than six million Ukrainians, the great majority of them civilians, die in the war.
1944 - The Soviet Union regains control of Ukraine and expands its borders to include territory taken from Romania, Poland and Czechoslovakia.
April 26, 1986 - Reactor 4 explodes at the Chernobyl, Ukraine, nuclear power plant, releasing large amounts of radiation into the atmosphere. More than 30 people died, and countless others later died from radiation symptoms. The government evacuates some 135,000 people from the area, and the 19-mile exclusion zone around the plant remains uninhabitable.
July 16, 1990 - Ukraine declares sovereignty.
August 24, 1991 - Parliament declares independence, pending a referendum on December 1.
December 1, 1991 - The referendum for independence passes with 90% approval.
December 8, 1991 - Ukraine joins the new Commonwealth of Independent States, along with Russia and Belarus.
2004 - President Leonid Kuchma declines to run for a third term and endorses Prime Minister Viktor Yanukovych. Russian President Vladimir Putin also supports Yanukovych’s campaign.
September 2004 - Opposition candidate Viktor Yushchenko develops a mysterious illness which leaves his face pock-marked. Medical tests later show he is suffering from dioxin poisoning.
October 31, 2004 - In the first round of presidential elections, Yanukovych and Yushchenko both receive about 40% of the vote.
November 21, 2004 - Preliminary exit polls from the run-off election give Yushchenko a lead of 52% to Yanukovych’s 43%, but Yanukovych is officially declared the winner. Independent election monitors allege fraud.
November 22, 2004 - Mass protests sweep the country, with demonstrators wearing orange, Yushchenko’s campaign color. Activist Yulia Tymoshenko becomes a prominent figure of the pro-Western Orange Revolution.
December 3, 2004 - The Supreme Court rules the previous run-off election invalid and orders a new run-off.
December 26, 2004 - Yushchenko wins the election with about 52% of the vote and is sworn in as president a month later.
January 2005 - Yushchenko names Tymoshenko as prime minister.
September 2005 - Yushchenko fires his entire cabinet, including Tymoshenko.
January 2006 - Russian energy monopoly Gazprom briefly cuts off natural gas supplies to Ukraine.
December 18, 2007 - Tymoshenko returns as prime minister.
January 2009 - Gazprom again cuts off supplies of natural gas to Ukraine over a payment dispute.
January 17, 2010 - Presidential elections are held. Yushchenko receives only 5% of the vote. Yanukovych receives 35% and Tymoshenko receives 25%, necessitating a run-off.
February 14, 2010 - In the run-off, Yanukovych wins 48.95% of the vote to Tymoshenko’s 45.47%. Tymoshenko alleges fraud and is openly critical of Yanukovych. She loses her position as prime minister in March.
June 2010 - Ukraine’s parliament abandons plans to join NATO.
August 2011 - A court motion calls for Tymoshenko’s arrest. The arrest is in connection to a 2009 gas contract negotiated when she was prime minister. Tymoshenko brushes off all charges against her as political, calling the trial a “farce.”
October 2011 - Tymoshenko is found guilty of criminally “abusing her office” over the 2009 gas deal with Gazprom. She is sentenced to seven years in prison.
December 17, 2013 - Putin agrees to buy $15 billion of Ukraine’s debt and reduce the price of natural gas supplied to the country.
January 16, 2014 - Yanukovych signs laws restricting the right to protest. This leads to large numbers of protesters in Kyiv and clashes with police. The law is repealed on January 28.
February 21, 2014 - Negotiations lead to a deal which reduces Yanukovych’s powers as president and rolls back parts of the Constitution.
February 22, 2014 - Parliament votes to remove Yanukovych from office. On the same day, former Prime Minister Tymoshenko is released from prison.
February 24, 2014 - An arrest warrant is issued for Yanukovych.
February 28, 2014 - Andrii Parubii, the Ukrainian chief of national security and defense, says the country’s military and police forces have stopped Russian military forces from seizing two airports in Crimea.
March 1, 2014 - The upper house of the Russian parliament votes to send troops into Crimea on the same day the pro-Russian leader of Crimea, Sergey Aksyonov, asks Putin for help in maintaining peace.
March 2, 2014 - Ukrainian Prime Minister Arseniy Yatsenyuk says of Russian troops in the Crimean peninsula, “This is a red alert. This is not a threat. This is actually a declaration of war to my country.”
March 3, 2014 - Ukrainian Ambassador Yuriy Sergeyev tells an emergency meeting of the UN Security Council that Russia has used planes, boats and helicopters to flood Crimea with 16,000 troops in the past week.
March 4, 2014 - US Secretary of State John Kerry visits Ukraine and announces the United States will give Ukraine’s new government a $1 billion loan guarantee. Senior US administration officials tell CNN this will help insulate the Ukrainian economy from the effects of reduced energy subsidies from Russia.
March 6, 2014 - Crimea’s parliament votes to hold a referendum on leaving Ukraine and becoming part of Russia.
March 16, 2014 - In the Crimean referendum, 96.7% vote in favor of leaving Ukraine and being annexed by Russia.
March 17, 2014 - US and EU officials announce sanctions on more than two dozen Russian officials and their allies in Crimea. Crimea’s regional parliament applies to join with Russia, and in Moscow, Putin signs a decree that recognizes the independence and sovereignty of the Republic of Crimea.
March 18, 2014 - In Moscow, Putin signs an annexation pact with the prime minister of Crimea and the mayor of the city of Sevastopol.
March 18, 2014 - In response to masked gunmen killing a member of Ukraine’s military, wounding another and placing the rest of the staff of a base in Crimea under arrest, the Defense Ministry authorizes its forces in Crimea to use weapons “to protect and preserve the life of Ukrainian soldiers.”
March 21, 2014 - Yatsenyuk, in Brussels, signs the political elements of a trade pact with the European Union.
March 22, 2014 - In Crimea, Russian special forces take control of Belbek Airbase, and pro-Russian self-defense forces take control of Novofederoskoe military base and a Ukrainian ship, the Slavutych.
March 27, 2014 - The International Monetary Fund agrees to allow Ukraine to borrow up to $18 billion over the next two years. The UN General Assembly approves a resolution stating Crimea’s succession referendum from Ukraine is not valid; the resolution’s vote is 100-11, with 58 abstentions.
April 15, 2014 - Acting President Oleksandr Turchynov tells the country’s Parliament an “anti-terrorist operation” is under way in Ukraine’s restive eastern Donetsk region. Tensions have soared in recent days in eastern Ukraine, where pro-Russian rebels have seized government and police buildings in as many as 10 towns and cities.
May 25, 2014 - Petro Poroshenko declares victory in Ukraine’s presidential election, following preliminary exit polls that suggested he got 56% of the vote.
May 27, 2014 - Authorities announce that a battle between pro-Russian rebels and government forces at Donetsk airport has claimed 40 lives.
June 7, 2014 - Poroshenko is sworn in as Ukraine’s new president.
June 27, 2014 - Ukraine signs a trade deal with the European Union, the same agreement that Yanukovych backed out of in 2013.
July 17, 2014 - Malaysia Airlines Flight 17 crashes in eastern Ukraine after being shot down by a surface-to-air missile, according to the United States. All 298 people aboard are killed.
July 24, 2014 - Yatsenyuk and his cabinet announce their resignation. A week later, parliament rejects his resignation.
September 20, 2014 - Ukraine and pro-Russian separatists agree to a ceasefire.
October 26, 2014 - Ukrainians vote in parliamentary elections. Ukrainian citizens in Russia-annexed Crimea and the eastern areas controlled by pro-Russian separatists do not participate in the elections because of ongoing violence. Poroshenko hails exit poll results and says the projected outcome gives “a powerful and irreversible backing to Ukraine’s path to Europe.”
January 26, 2015 - Poroshenko announces that Ukraine will ask The Hague tribunal to investigate alleged “crimes against humanity” in the conflict in eastern Ukraine.
February 5, 2015 - With Kerry by his side, Yatsenyuk says the Russian military is on the ground in the country.
February 12, 2015 - Peace talks end in a breakthrough: A ceasefire and an agreement for both sides to pull back heavy weapons. In March, heavy weapons are pulled back from the front lines, but the violence continues.
April 10, 2016 - Yatsenyuk announces he will resign.
September 28, 2016 - The Joint Investigation Team, a Dutch-led group of prosecutors gathering evidence for a potential criminal trial, says that it has concluded that Malaysia Airlines Flight 17 was downed over eastern Ukraine by a Buk missile brought in from Russia to a pro-Russian area of eastern Ukraine.
October 16, 2016 - Pro-Russian separatist commander Arsen Pavlov, known by the nickname “Motorola,” is killed in the city of Donetsk, in eastern Ukraine.
February 20, 2017 - A ceasefire aimed at ending the bloody fight between Ukrainian forces and Russian-backed separatists begins. The ceasefire is a renewed attempt to enforce the Minsk peace protocol – an agreement that has repeatedly failed since it was first partially implemented in 2015.
March 23, 2017 - Denis Voronenkov, a onetime Communist member of Russia’s lower house of parliament, dies after being shot outside a hotel in Kyiv. Poroshenko calls the shooting a “Russian state terrorist act.” Voronenkov, who fled to Ukraine in 2016, is the latest in a string of Putin and Russia’s critics who were killed or injured under mysterious circumstances.
July 20, 2018 - The Pentagon releases $200 million in security assistance to the Ukraine. The funds were contingent on Ukraine passing a series of defense reforms to help bring the country’s defense practices into line with modern standards. Ukraine’s passage of a new national security law, signed by Poroshenko on July 5, met the requirements enshrined in the US legislation, thereby allowing the Pentagon to release the funds.
November 25, 2018 - The Ukrainian military says Russian boats opened fire on and seized three of its ships near Crimea, detaining 23 of its sailors and wounding at least three. The ships were planning to enter the Kerch Strait, a shared waterway of strategic importance for both countries. Russia claims the vessels illegally entered Russia’s territorial waters and were carrying out dangerous maneuvers, according to Russian state news agency TASS.
November 26, 2018 - Ukrainian lawmakers vote to introduce martial law in the border areas with Russia. It will be introduced on November 28 and will last 30 days.
January 24, 2019 - Yanukovych is found guilty of treason by a Ukrainian court for helping Russia and for his attempts to quash demonstrations in 2014. He is sentenced in absentia to 13 years in prison.
April 21, 2019 - Political newcomer and television comedian Volodymyr Zelensky declares victory in Ukraine’s presidential elections after exit polls show he’s on track for a landslide win against incumbent Poroshenko. Zelensky’s populist campaign centered on his vow to fight corruption and jumpstart the economy.
May 1, 2019 - The New York Times publishes an article about allegations against former Vice President Joe Biden and his son, Hunter Biden related to a Ukrainian energy company called Burisma Holdings. The younger Biden served on the board of Burisma and in 2016, his father pressured Ukraine to oust a prosecutor who had investigated the company. Rudy Giuliani, the personal lawyer of US President Donald Trump, tells the Times that he is looking into the matter on behalf of his client, indicating that the vice president’s move was motivated by a desire to protect his son from criminal charges. Giuliani’s claims are later undermined when Bloomberg reports that the Burisma investigation was “dormant” when Biden pressed the prosecutor to resign.
May 7, 2019 - The US Embassy in Kyiv announces that Ambassador Marie Yovanovitch will leave her post earlier than planned.
May 20, 2019 - Zelensky is sworn in as president. He orders a snap election for parliament.
July 21, 2019 - Zelensky’s party wins a majority of seats in parliament during the snap election.
July 25, 2019 - Zelensky speaks with Trump via phone. Trump asks Zelensky to work with Giuliani and Attorney General Bill Barr on a Biden investigation, according to notes from the call released in the wake of a whistleblower complaint about the president’s conduct. It is later reported that Trump told his acting chief of staff to block nearly $400 million in military aid to Ukraine before he spoke to Zelensky.
September 1, 2019 - Zelensky meets US Vice President Mike Pence in Poland to mark the anniversary of the outbreak of WWII. Pence travels to Poland in place of Trump, who canceled his trip to monitor Hurricane Dorian as the storm approaches the southeastern United States. Zelensky and Pence discuss military assistance as well as corruption in Ukraine.
September 7, 2019 - Ukrainian and Russian media report that 70 individuals have been released in a long-awaited prisoner exchange between Ukraine and Russia, a move that is meant to ease tensions between the two countries.
September 25, 2019 - Zelensky meets Trump on the sidelines of the UN General Assembly in New York. During a joint press conference, Zelensky says he does not want to become involved in American politics and he stresses that he did not feel pressured by Trump during the July phone call.
October 1, 2019 - Zelensky agrees to hold a local election in eastern Ukraine, signing accords with Russia, European monitors and separatists from the region. The agreement could pave the way for peace talks between Zelensky, Putin and European leaders. Ukrainian nationalists protest the agreement, describing it as a capitulation to Russia.
January 8, 2020 - Iran unintentionally shoots down a Ukrainian plane near Tehran, killing 176 people. According to the general staff of Iran’s armed forces, the plane was unintentionally shot down due to human error.
February 20, 2020 - Protesters attack a convoy of buses carrying Ukrainian citizens and other nationals evacuated from the Chinese city of Wuhan. Protesters blocked roads in the Ukrainian town of Noviy Sanzhari, where 72 evacuees are to be monitored for the novel coronavirus.
March 4, 2020 - Zelensky replaces the country’s Prime Minister, saying he hoped the new PM would “do the impossible.” Ukraine’s Parliament approves Denis Shmygal as the new PM, after accepting the resignation of Oleksiy Honcharuk at an extraordinary session of the Verkhovna Rada, Ukraine’s parliament.
June 11, 2020 - In a statement to CNN, the Pentagon confirms it is moving forward with a $250 million security assistance package to Ukraine, half of which was contingent on Kyiv making progress on reforms and anti-corruption efforts. The statement says that the “funds – $125 million of which was conditional on Ukraine’s progress on defense reforms – will provide equipment to support ongoing training programs and operational needs.”
December 3, 2021 - After months of steady increases along the Russia-Ukraine frontier, CNN reports that Russian forces have capabilities in place along the Ukraine border to carry out a swift and immediate invasion, including erecting supply lines such as medical units and fuel that could sustain a drawn-out conflict, should Moscow choose to invade.
December 8, 2021 - Biden rules out sending US troops to Ukraine to defend the country from a Russian invasion a day after laying out the consequences for such an incursion during a phone call with Putin.
February 24, 2022 - Russian military forces enter Ukraine and begin a full scale assault across airfields, military headquarters, major cities and ports. Putin threatens “those who may be tempted to intervene” in Russia’s invasion.
June 29, 2022 - A report released by the United Nations’ Office of the High Commissioner for Human Rights documents 10,000 civilian casualties in Ukraine, including 4,731 deaths, since the invasion by Russia on February 24.