Nagorno-Karabakh Conflict Explained: History, the 2020 War, and the Great Power Game

In the autumn of 2020, war returned to the South Caucasus as Armenia and Azerbaijan clashed over Nagorno-Karabakh, a mountainous region at the crossroads of Europe, Asia, and the Middle East. The fighting — with heavy artillery, drones, missiles, and fighter jets — killed hundreds of people and drew in the attention of Russia, Turkey, France, Iran, the United States, and China. Why does a dispute between two small countries matter so much to the world's great powers? The answer lies in a century of tangled history and in pipelines, trade routes, and strategic geography.

The Roots of the Conflict

Armenia and Azerbaijan sit in the Caucasus, the mountain corridor linking Asia, Europe, and the Middle East — a region contested for centuries by Persian, Ottoman, and Russian empires. Both were republics of the Soviet Union. Armenia's population is predominantly Christian; Azerbaijan's is predominantly Muslim. Their rivalry centers on Nagorno-Karabakh, a region inside Azerbaijan's internationally recognized borders whose population has historically been mostly ethnic Armenian.

The modern dispute traces to Soviet-era decisions. During the Soviet period, the Armenian-majority highland of Nagorno-Karabakh was placed under Azerbaijani administration, planting the seed of the conflict. In the late 1980s, as Soviet authority weakened, the region's assembly voted to join Armenia, and tensions exploded into full-scale war after the Soviet collapse. That war ended with a Russian-brokered ceasefire in 1994: ethnic Armenian forces held Nagorno-Karabakh and surrounding districts, while Azerbaijan retained its legal claim. Decades of internationally mediated negotiations never produced a peace treaty, and the ceasefire line remained one of the world's most volatile frozen conflicts.

Why Great Powers Care: Energy and Trade Corridors

Look at a map and the strategic logic becomes clear. Only a handful of overland routes connect Europe and Asia, running through Russia, Iran, or Azerbaijan — and the Azerbaijani corridor passes near the conflict zone. The Caspian basin holds major oil and gas reserves, and pipelines carrying Caspian energy to European and world markets run through this neighborhood. Roads, railways, and fiber-optic cables follow the same geography.

During the war in Afghanistan, the United States and NATO routed a significant share of fuel and logistics through Georgia and Azerbaijan precisely to avoid dependence on Russia and Pakistan. For the West, Azerbaijan became an energy and transit partner that bypassed both Moscow and Tehran. Any war near these arteries rattles energy markets — indeed, the 2020 fighting triggered a s

pike in international oil prices — and threatens infrastructure worth hundreds of billions of dollars.

The 2020 War

The autumn 2020 escalation dwarfed the skirmishes of previous years. Both sides deployed heavy artillery, tanks, missiles, combat aircraft, and — decisively — armed drones that reshaped the battlefield. Fighting concentrated around towns and strategic heights in and around Nagorno-Karabakh.

Each side published sharply different accounts of the destruction, a reminder that casualty and equipment claims in wartime are contested. What was not in dispute was the human cost: hundreds of combatants and civilians were killed, towns on both sides came under shelling, and tens of thousands of people were displaced. The war ended after 44 days with a Russian-brokered ceasefire agreement that returned significant territory to Azerbaijani control and deployed Russian peacekeepers to the remaining Armenian-held areas — redrawing a map that had stood since 1994.

Russia: Ally, Arms Supplier, and Mediator

No outside power is more entangled in the Caucasus than Russia, which regards the region as its strategic backyard. Moscow's position is deliberately balanced: it maintains a military base in Armenia, stations thousands of troops there, and is Armenia's formal ally — yet it also sells arms to and maintains cordial relations with Azerbaijan.

When the 2020 war erupted, Russia moved on two tracks. Diplomatically, President Vladimir Putin and Foreign Minister Sergey Lavrov pressed both sides for an immediate ceasefire, with Lavrov shuttling between his Armenian and Azerbaijani counterparts and offering Moscow as a platform for talks. Russia also voiced alarm at reports of foreign fighters entering the conflict zone, warning of long-term threats to regional security. This dual role — participant in the region's security architecture and would-be peacemaker — culminated in the November 2020 ceasefire deal, which put Russian peacekeepers on the ground and cemented Moscow as the indispensable power broker.

Turkey, France, Iran, and the United States

Turkey backed Azerbaijan openly and emphatically. The two Turkic, predominantly Muslim nations share deep cultural and political ties, while Turkey has no diplomatic relations with Armenia and a long history of grievance with it. Ankara provided political support and, according to multiple reports, military assistance including drones and advisers — a claim Turkey framed within its alliance commitments. When Armenia alleged its Russian-made Su-25 jet was shot down by a Turkish F-16, Turkey denied it, but the episode showed how close the war came to pulling in outside airpower.

France took the opposite side rhetorically. President Emmanuel Macron publicly condemned Turkey's stance as belligerent and dangerous, accusing Ankara of encouraging Azerbaijan to retake the territory by force. As a co-chair of the OSCE Minsk Group — the international mediation format created in the 1990s alongside Russia and the United States — France positioned itself as a defender of the negotiation process, and the Franco-Turkish war of words became a subplot of the wider conflict.

Iran, which borders both countries, watched nervously. Tehran denied accusations of shipping weapons to Armenia while offering its own mediation, reflecting its discomfort with a war on its northern border that could empower Turkey and Azerbaijan at its expense.

The United States, as the third Minsk Group co-chair, joined the chorus calling for a ceasefire, though its diplomatic bandwidth was consumed by a presidential election. The episode illustrated a broader pattern: Washington's interest in Caspian energy corridors without a matching commitment of diplomatic capital.

The Belt and Road Dimension

China's perspective adds an economic layer. Both Azerbaijan and Armenia courted Beijing as partners in the Belt and Road Initiative, the vast infrastructure program reviving Silk Road trade routes. For China, the Caucasus corridor offers a land route between western China and Europe that avoids both Russia and the Middle East's chokepoints — Chinese freight

trains reached Baku on trial runs, and direct air links connected Chinese cities to Azerbaijan's capital.

Armenia, landlocked and economically constrained, promoted its own "North-South Transport Corridor" to plug into Eurasian trade, and China became one of its largest trading partners. Yet Beijing stayed carefully neutral on the fighting itself: the Foreign Ministry called for calm, restraint, and political dialogue, avoiding any step that would alienate either side or alarm Russia, which watches China's Caucasus inroads warily. For both small states, the lesson was that economic courtship of China does not translate into security guarantees.

The Frozen Decades: 1994–2020

The 1994 ceasefire stopped the shooting but resolved nothing. For over 25 years, the OSCE Minsk Group — co-chaired by Russia, France, and the United States — shuttled between Baku and Yerevan pursuing a negotiated settlement, while the line of contact bristled with trenches, snipers, and artillery. Periodic flare-ups, including a sharp four-day clash in April 2016, showed the ceasefire was anything but stable. Each round of talks foundered on the same core questions: the final status of Nagorno-Karabakh, the return of surrounding territories, the fate of displaced people, and security guarantees. By 2020, frustration in Baku with the diplomatic deadlock had been building for years.

The Human Dimension

Behind the geopolitics are people. Both the 1990s war and the 2020 fighting displaced tens of thousands of civilians, and shelling struck towns and villages on both sides. Cultural heritage added another layer of anguish: the region holds Armenian churches and monasteries centuries old alongside Azerbaijani mosques and monuments, and each community fears for its heritage under the other's control. International organizations have repeatedly called for civilian protection and heritage preservation regardless of which flag flies overhead — a reminder that maps are drawn over lived lives.

Where Things Stand After 2020

The November 2020 ceasefire did not end the story. Russian peacekeepers deployed along the remaining contact line and the corridor linking Armenia to Nagorno-Karabakh, while Azerbaijan consolidated control over regained districts. Tensions persisted: border incidents flared, blockade of the corridor raised humanitarian alarms, and in 2023 Azerbaijan launched a swift military operation that restored its full control over the region, prompting the departure of most of its Armenian population. Peace negotiations between Baku and Yerevan have continued since, focusing on border delimitation and a formal treaty — progress has been incremental, but both sides have signaled that a durable settlement, elusive for three decades, remains the stated goal.

Key Takeaways

• The Nagorno-Karabakh conflict stems from a Soviet-era territorial decision, an Armenian-majority region inside Azerbaijan, and an unresolved war from the 1990s.
• The South Caucasus matters globally because Caspian energy pipelines and Europe–Asia trade corridors run through it.
• The 2020 war, shaped by drones and heavy weaponry, ended with a Russian-brokered ceasefire that redrew the map and installed Russian peacekeepers.
• Russia plays a dual role as Armenia's ally and regional mediator; Turkey backs Azerbaijan; France, Iran, and the US pursue competing interests through the OSCE Minsk Group framework.
• China's Belt and Road ambitions make the region an economic prize, but Beijing has stayed neutral on the conflict itself.