Russia on Thursday launched a multi-pronged attack against Ukraine. President Vladimir Putin announced the military operation in an early morning address, saying that the goal of the offensive was the “demilitarization” and “denazification" of the country.

Three days into the invasion, outmanned Ukrainian forces are — for now — fending off Russian attacks in major cities, including the capital, Kyiv. Nearly 200 Ukrainians have been killed in the fighting, health officials said Saturday and more than 150,000 have fled to neighboring European countries.

The crisis is centered in part on land borders and strategic influence. Moscow sees Ukraine as an important buffer against NATO. But Ukraine sees Russia as an aggressor that, even prior to this week’s invasion, had already occupied parts of Ukrainian territory.

Separatists in Donetsk and Luhansk, backed by Russia, have been fighting Ukrainian government forces since 2014, when Russia annexed Crimea and supported the establishment of separatist enclaves in the eastern part of the country.

Here are four maps that help explain the deep roots of the conflict and where things stand right now.

How are Russia and Ukraine linked historically?

The historical links date as far back as the 9th century, when a group of people called the Rus moved their capital to Kyiv — a legacy Russian President Vladimir Putin has often invoked when arguing that Ukraine is bound to Russia.

Ukraine was part of the Soviet Union until it declared independence in August 1991.

SWE.

NOR.

FIN.

EST.

LAT.

LITH.

Boundary of former

Soviet Union

Moscow

GER.

POL.

BELARUS

MONGOLIA

MOL.—

KAZAKHSTAN

GEORGIA

KYRGYZ.

ARMENIA—

AZER.

CHINA

TAJIK.

SYRIA

IRAN

AFGH.

IRAQ

Ukraine served as a strategic part of the Soviet Union, with a large agriculture industry and important ports on the Black Sea.

The countries’ historical connection is rhetorically present in the current tensions. “I am confident that true sovereignty of Ukraine is possible only in partnership with Russia,” Putin wrote in July. “Together we have always been and will be many times stronger and more successful. For we are one people.”

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Why does Putin care whether Ukraine joins NATO?

NATO was founded in 1949 to protect against Soviet aggression. The alliance has since expanded to 30 countries, including the former Soviet republics of Lithuania, Estonia and Latvia. The treaty states that if one nation is invaded or attacked by a third party, all nations in NATO will collectively mobilize in its defense.

The Kremlin is demanding guarantees from NATO that Ukraine and Georgia — another former Soviet republic that Russia briefly invaded in 2008 — will not join the alliance. The Biden administration and NATO allies say Putin cannot deny Ukraine that right, but nothing is in the works to grant the country membership anytime soon.

Either country’s admission into the alliance would increase NATO’s footprint along Russia’s borders.

NATO member states

CANADA

Atlantic

Ocean

Alaska

Greenland

U.S.

(DENMARK)

ICELAND

SPAIN

Arctic

Ocean

U.K.

North

Pole

FRANCE

NOR.

GER.

SWE.

Pacific

Ocean

FIN.

POL.

BELARUS

UKRAINE

TURKEY

JAPAN

CHINA

N. KOR.

GEORGIA

MONGOLIA

What parts of Ukraine did Russia control before the current invasion?

In 2014, Russian military forces annexed Crimea on the Black Sea. Moscow-backed separatists also took control of the eastern industrial regions of Donetsk and Luhansk, which are on Russia’s border. The ongoing conflict in eastern Ukraine has claimed about 14,000 lives.

Percentage of population that identified Russian as their first language

(2001 census, most recent data available)

0

100%

BELARUS

POLAND

RUSSIA

Chernobyl

Lviv

Kyiv

Dnieper

Kharkiv

Luhansk

UKRAINE

Dnipropetrovsk

Donetsk

Separatist-

controlled

area

ROMANIA

100 MILES

Sea of

Azov

Odessa

Crimea

RUSSIA

Sevastopol

Black Sea

According to a 2001 census, more than 50 percent of the population in Crimea and Donetsk identified Russian as their native language. (Ukraine has not conducted a more recent census.) Putin says he is defending the rights of Russian speakers in those areas.

The conflict in the Donbas began heating up last week. An observer mission from the Organization for Security and Cooperation in Europe counted nearly 600 cease-fire violations on Thursday.

On Monday, Russia formally recognized the two self-proclaimed republics and announced it would send troops there. European officials confirmed Tuesday that Russian forces had arrived in the separatist enclaves. The Kremlin said Tuesday that its recognition of the separatist territories includes areas controlled by the Kyiv government. That announcement laid the groundwork for a full-scale assault on targets across the country beginning early Thursday.

Are there Russian-linked separatist regions in other countries?

Yes. These “frozen conflicts” have been around since after the Soviet Union fell in 1991. They exist in the former Soviet republics of Azerbaijan, Moldova and Georgia and are widely seen as part of the Kremlin’s larger strategy to extend influence and evade sanctions.

BELARUS

POLAND

RUSSIA

Kyiv

KAZAKHSTAN

UKRAINE

Separatist-

controlled area

MOLDOVA

ROMANIA

Abkhazia

South

Ossetia

Transnistria

Nagorno-

Karabakh

Crimea

BULGARIA

Annexed by

Russia in 2014

Black

Sea

GEORGIA

AZERBAIJAN

ARMENIA

GREECE

AZER.

TURKEY

200 MILES

IRAN

For example, a 2018 Washington Post investigation found that in separatist-controlled eastern Ukraine, officials transfer money to the Russian-supported breakaway region of South Ossetia in Georgia, where the funds are then wired to Russia. Russia then uses the money to pay for goods that are shipped directly to eastern Ukraine.

In Transnistria, pro-Russian separatists broke away from Moldova in 1991, saying they identified more with Ukraine and Russia than with the newly formed Moldova republic that was more linked to Romania.

Nagorno-Karabakh, an ethnic Armenian enclave within the internationally recognized borders of Azerbaijan, became a disputed region after the fall of the Soviet Union and the independence of both countries. In September 2020, thousands of troops were killed and entire villages were displaced in a bloody conflict that lasted six weeks. The eventual peace deal was brokered by Putin, showing how Russia has become a key power broker in a conflict that dates to the Soviet era. Russian peacekeepers now patrol the enclave.

Abkhazia and South Ossetia have effectively broken away from Georgia with Russian help, both declaring independence in the early 1990s and remaining strategically linked to the Kremlin.

Hannah Dormido and Claire Parker contributed to this report, which has been updated.