Overview
Kosovo, a province of Serbia with an Albanian majority, lost its autonomy in 1989 under Slobodan Milošević. A decade of peaceful Albanian resistance was followed by the rise of the Kosovo Liberation Army Key term · 1990s–1999 Kosovo Liberation Army (KLA) An ethnic Albanian armed group that fought for Kosovo's independence from Serbia. Why it matters Its attacks and Serbia's brutal response escalated the conflict into war. It was accused of its own abuses, and several former commanders were later tried for war crimes. See in glossary → and a brutal Serbian counter-insurgency. In March 1999 NATO began a 78-day bombing campaign — Operation Allied Force Key term · 24 March – 10 June 1999 Operation Allied Force NATO's 78-day bombing campaign against the Federal Republic of Yugoslavia over Kosovo. Why it matters It forced the withdrawal of Serbian forces, but without UN authorisation — a landmark case in the debate on humanitarian intervention. See in glossary → — without the approval of the UN Security Council. Serbian forces withdrew in June, and Kosovo came under UN administration.
Key dates
- 1974 Yugoslavia’s constitution gives Kosovo wide autonomy.
- 1987–1989 Milošević rises to power in Serbia; Kosovo’s autonomy is revoked Key term · 1974–1989 Kosovo's autonomy The self-government Kosovo enjoyed under Yugoslavia's 1974 constitution, with its own assembly and representation in federal institutions. Why it matters Its removal by Milošević in 1989 excluded Albanians from public life and began the confrontation that led to war. See in glossary → in 1989.
- 28 Jun 1989 Milošević’s speech at Gazimestan on the 600th anniversary of the Battle of Kosovo.
- 1990s Ibrahim Rugova leads nonviolent resistance and parallel Albanian institutions.
- Nov 1995 The Dayton Accords Key term · November 1995 Dayton Accords The peace agreement that ended the war in Bosnia and Herzegovina. Why it matters By leaving Kosovo out, it convinced many Kosovo Albanians that nonviolence was failing and helped the KLA win support. See in glossary → end the war in Bosnia but ignore Kosovo.
- 1996–1998 The KLA’s armed campaign grows; Serbian forces respond with massacres.
- 15 Jan 1999 The Račak massacre Key term · 15 January 1999 Račak massacre The killing of 45 Kosovo Albanians in the village of Račak by Serbian forces. Why it matters International monitors called it a massacre; it hardened Western opinion and led to the Rambouillet talks and, when they failed, NATO action. See in glossary → .
- Feb–Mar 1999 Peace talks at Rambouillet fail.
- 24 Mar–10 Jun 1999 NATO’s air campaign; Serbian forces expel hundreds of thousands of Kosovo Albanians.
- 10 Jun 1999 UN Security Council Resolution 1244 Key term · 10 June 1999 Resolution 1244 The UN Security Council resolution that ended the Kosovo war, establishing a UN administration and a NATO-led security force. Why it matters It brought the UN back into the settlement after NATO acted without it, but left Kosovo's final status unresolved. See in glossary → ; KFOR Key term · from June 1999 KFOR The NATO-led Kosovo Force responsible for security after Serbian forces withdrew. Why it matters It oversaw the return of Albanian refugees but struggled at first to protect Serbs and Roma from revenge attacks. See in glossary → enters Kosovo.
- 2001–2002 Milošević is handed over to the ICTY Key term · 1993–2017 ICTY The International Criminal Tribunal for the former Yugoslavia, set up by the UN in The Hague. Why it matters It indicted Milošević while he was still head of state, establishing that leaders could be held personally responsible for war crimes. See in glossary → ; his trial begins in February 2002.
Causes
Competing claims. For Serbs, Kosovo was the heartland of medieval Serbia and the site of the Battle of Kosovo (1389), central to Serbian national identity. By the 1980s about 90% of its population was Albanian, and Albanians demanded full republic status.
Milošević and Serbian nationalism. Milošević won power by championing Kosovo’s Serbs. At Kosovo Polje in 1987 he told Serbs who had clashed with police that “No one should be allowed to beat you” Quotation · 24 April 1987 Slobodan Milošević Remark to Serb protesters at Kosovo Polje Why it matters Translations vary — often rendered 'No one should dare to beat you'. The televised moment made Milošević the champion of Serbian nationalism and launched his rise. . In 1989 Kosovo’s autonomy was abolished, and Albanians were dismissed from state jobs, schools and hospitals.
The failure of nonviolence. Rugova’s Democratic League of Kosovo built a parallel state with its own schools and health care. But when the Dayton Accords of 1995 left Kosovo unmentioned, many Albanians concluded that only violence would win international attention — and the KLA grew rapidly, helped by weapons looted from Albania’s arsenals in 1997.
War and intervention
Serbian security forces responded to KLA attacks with operations that destroyed villages and killed civilians — including the Jashari family compound in Prekaz (1998) and, in January 1999, 45 Albanians at Račak. After the Rambouillet talks failed, NATO began bombing Yugoslavia on 24 March 1999.
Western leaders justified the campaign as a humanitarian necessity:
This is a just war, based not on any territorial ambitions but on values.
Why this quote matters
Blair argued that the principle of non-interference in other states' affairs must be qualified when governments commit atrocities — a key statement of the case for humanitarian intervention.
During the bombing, Serbian forces drove some 800,000 Albanians out of Kosovo — an act of ethnic cleansing Key term · 1990s (as a term) Ethnic cleansing The forcible removal of an ethnic or religious group from a territory, through violence, terror and expulsion. Why it matters The term became widespread during the wars in the former Yugoslavia. It overlaps with genocide but is not the same — genocide requires intent to destroy a group, not only to remove it. See in glossary → . NATO’s strikes also caused civilian deaths, including in the mistaken bombing of the Chinese embassy in Belgrade. Milošević accepted NATO’s terms in June; Russia’s diplomatic support for a settlement helped.
Was it legal? Was it legitimate?
Russia and China opposed the intervention, and there was no Security Council resolution authorising force. An independent commission concluded that the intervention was “illegal but legitimate” Quotation · 2000 Independent International Commission on Kosovo The Kosovo Report Why it matters The phrase captures the dilemma of humanitarian intervention — acting to stop atrocities without the authority of international law. It fed into the later 'Responsibility to Protect' doctrine. .
Aftermath
- Kosovo was administered by the UN (UNMIK) and secured by NATO-led KFOR; many Serbs and Roma fled revenge attacks.
- Milošević lost power in October 2000, was extradited to The Hague in 2001, and died in 2006 before a verdict.
- Kosovo declared independence in 2008; Serbia and several other states do not recognise it.
Historians’ debate
Malcolm challenged Serbian nationalist myths about Kosovo’s history, including the idea that Albanians were recent arrivals in a Serbian heartland.
Judah traced how both Serbian repression and KLA strategy — including provoking Serbian overreaction to win Western support — drove the conflict.
Chomsky argued that NATO acted from strategic self-interest rather than humanitarian motives, and that the bombing escalated the atrocities it claimed to prevent.
Test yourself
Why did many Kosovo Albanians turn from Rugova's nonviolence to the KLA? Reveal
Years of peaceful resistance had not restored autonomy, and the Dayton Accords of 1995 ignored Kosovo — suggesting that the international community only responded to violence. Weapons from Albania’s collapse in 1997 also became available.
Why was NATO's intervention controversial in international law? Reveal
It had no UN Security Council authorisation, because Russia and China would have vetoed it. Supporters argued it was justified to prevent a humanitarian catastrophe; critics saw it as an illegal use of force against a sovereign state.
What did Resolution 1244 establish? Reveal
It placed Kosovo under a UN interim administration (UNMIK), authorised an international security presence (KFOR), and required the withdrawal of Yugoslav forces — while formally reaffirming Yugoslavia’s sovereignty.
Key terms
- Dayton Accords November 1995
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The peace agreement that ended the war in Bosnia and Herzegovina.
Significance: By leaving Kosovo out, it convinced many Kosovo Albanians that nonviolence was failing and helped the KLA win support.
- Ethnic cleansing 1990s (as a term)
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The forcible removal of an ethnic or religious group from a territory, through violence, terror and expulsion.
Significance: The term became widespread during the wars in the former Yugoslavia. It overlaps with genocide but is not the same — genocide requires intent to destroy a group, not only to remove it.
- ICTY 1993–2017
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The International Criminal Tribunal for the former Yugoslavia, set up by the UN in The Hague.
Significance: It indicted Milošević while he was still head of state, establishing that leaders could be held personally responsible for war crimes.
- KFOR from June 1999
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The NATO-led Kosovo Force responsible for security after Serbian forces withdrew.
Significance: It oversaw the return of Albanian refugees but struggled at first to protect Serbs and Roma from revenge attacks.
- Kosovo Liberation Army (KLA) 1990s–1999
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An ethnic Albanian armed group that fought for Kosovo's independence from Serbia.
Significance: Its attacks and Serbia's brutal response escalated the conflict into war. It was accused of its own abuses, and several former commanders were later tried for war crimes.
- Kosovo's autonomy 1974–1989
-
The self-government Kosovo enjoyed under Yugoslavia's 1974 constitution, with its own assembly and representation in federal institutions.
Significance: Its removal by Milošević in 1989 excluded Albanians from public life and began the confrontation that led to war.
- Operation Allied Force 24 March – 10 June 1999
-
NATO's 78-day bombing campaign against the Federal Republic of Yugoslavia over Kosovo.
Significance: It forced the withdrawal of Serbian forces, but without UN authorisation — a landmark case in the debate on humanitarian intervention.
- Račak massacre 15 January 1999
-
The killing of 45 Kosovo Albanians in the village of Račak by Serbian forces.
Significance: International monitors called it a massacre; it hardened Western opinion and led to the Rambouillet talks and, when they failed, NATO action.
- Resolution 1244 10 June 1999
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The UN Security Council resolution that ended the Kosovo war, establishing a UN administration and a NATO-led security force.
Significance: It brought the UN back into the settlement after NATO acted without it, but left Kosovo's final status unresolved.