The Assembly of Kosovo, then a province of Serbia under transitional UN administration (UNMIK), approved a declaration of independence on 17 February 2008. Kosovo was soon recognized as a sovereign state by the United States, Turkey, Albania, Austria, Germany, Italy, France, the United Kingdom, the Republic of China (Taiwan), and others. This triggered an international debate over whether Kosovo's unilateral declaration of independence had set a precedent in international law that could apply to other separatist movements, or whether it is a special case. The recognition of Kosovo's independence by 111 out of 193 UN states, according to many sources, has given fresh impetus to other separatist movements.
There is an estimation that a group of between 70 and 200 unrecognized nations and organizations use the Kosovo precedent to achieve their goals. Abkhazia and South Ossetia renewed their calls for the recognition of their sovereignty. Kosovo's independence also led to increased tensions in Bosnia-Herzegovina, where the Republika Srpska vetoed recognising Kosovo, and threatened to declare independence themselves. The Republic of Crimea proclaimed its independence from Ukraine on 11 March 2014, citing the Kosovo precedent, and was annexed by the Russian Federation a week later.
Some leaders argue that the Kosovo situation is unique and does not establish a precedent.
In a statement issued 19 February 2008 the U.S. State Department argued every territorial conflict is unique. It said Kosovo's unilateral independence cannot be used by other states to resolve disputes. When asked about the Kosovo's independence in reference to recognition of South Ossetia, Secretary of State Condoleezza Rice dismissed it and said, "we've been very clear that Kosovo is sui generis and that that is because of the special circumstances out of which the breakup of Yugoslavia came. The special circumstances of the aggression of the Milosevic forces against Kosovars, particularly Albanian Kosovars, and it’s a special circumstance."
Secretary-General of the United Nations Ban Ki-Moon in an interview for Interfax news agency said "Each situation needs to be examined based on its unique circumstances," and said Kosovo was a "highly distinctive situation" because of the intervention of the international community. At the same time he emphasised that recognition is left up to UN member states and is not decided by the Secretariat or the Secretary-General.
Some argue that Kosovo establishes a precedent for other people who wish to secede.
A number of political leaders have voiced their belief that the independence of Kosovo will create a dangerous precedent for other separatist movements.
To minimize a serious influence of Kosovo Precedent to the solution of other conflicts, the OSCE Parliamentary Assembly held in Kiev in July 2007 issued a warning that "solution of certain conflicts should not be used as a model for the solution of other conflicts".
Russian President Vladimir Putin stated in 2008: "Our position is extremely clear. Any resolution on Kosovo should be approved by both sides. It is also clear that any resolution on Kosovo will definitely set a precedent in international practice." Analysts have taken this as meaning the Russian Federation would come out for the independence of de facto independent breakaway regions in the former Soviet Union.
Sergei Mironov, the chairman of Russia's upper house of parliament stated in December 2007, "In case of the unilateral recognition of the independence of Kosovo, Russia will be entitled to change its approach to the so-called unrecognised republics in the post-soviet regions - South Ossetia, Abkhazia and Pridnestrovie." He went on to state "In case of such a recognition of Kosovo, Russia will be able to say that it is free in its approach, including towards the so-called unrecognised republics of Abkhazia, South Ossetia, the Nagorno-Karabakh Republic and Transnistria."
Immediately following Kosovo's declaration of independence the Russian officials appeared to soften their position, with Boris Gryzlov stating only that Moscow should “reshape its relations with self-proclaimed republics” which according to news reports could mean lifting the economic embargo on the regions.
On 13 March 2008, following a hearing on the unrecognised republics, the Russian Duma Committee for CIS recommended an upgrading of relations with Abkhazia, Transnistria, the Nagorno-Karabakh Republic and South Ossetia - including the possibility of recognition. Other recommendations included or reported include:
Alexei Ostrovsky, chairman of the lower house's committee on former Soviet affairs said at the parliamentary hearing, "The world community should understand that from now on the resolution of conflicts in the ex-Soviet area cannot be seen in any other context from that of Kosovo."  Participation of the breakaway republics in international organisations and forums was also mentioned in a press release before the hearings. The Nezavisimaya Gazeta daily described the hearing as "the launch of a procedure of recognition". The committee recommendations were set to go to a vote a week after the hearing. Russian Deputy Foreign Minister Grigory Karasin said the ministry would "look carefully at all the recommendations" but that Russian policy remained unchanged.
Russian Foreign Minister Sergey Lavrov stated in 2008: "A precedent is objectively created not just for South Ossetia and Abkhazia but also for an estimated 200 territories around the world. If someone is allowed to do something, many others will expect similar treatment." Chairman of Foreign Affairs Committee Mikhail Margelov said the precedent set by Kosovo "will inspire separatists not only in Europe, but in the Middle East as well."
In 2014 Russia recognized Crimean independence, but not Kosovo.
EU High Representative for Common Foreign and Security Policy Javier Solana has expressed concern that Kosovo's campaign for independence could set a precedent for Georgia's breakaway regions of South Ossetia and Abkhazia. On 6 March 2008 Russia's Foreign Ministry announced it had lifted sanctions on Abkhazia and called on other CIS member states to do the same. Russia denied the event had any connection to Kosovo, but Georgian parliament speaker Nino Burjanadze said she believed the move was part of Russia's response to Kosovo's declaration and signals an attempt to "annex" Abkhazia.
Eduard Kokoity, the President of South Ossetia's breakaway republic, speaking immediately after Kosovo's secession said, "Some countries will recognise our republics [South Ossetia and Abkhazia]. I cannot rule out that some of them may do so later this year. Russia, however, will not necessarily be the first to recognise our independence." South Ossetia, Abkhazia, and Transnistria have all submitted formal requests for recognition of their independence to Russia, among other countries, and international organisations citing Kosovo as a precedent.
Abkhazia's Sergei Bagapsh and South Ossetia's Eduard Kokoity said in a statement addressed to the United Nations: "If Kosovo is separated from Serbia and its independence is recognised, one more powerful proof will emerge that ethnic conflicts can be solved on principles other than a respect for territorial integrity ... Abkhazia and South Ossetia have just as strong grounds to demand independence as Kosovo." Separately, Sergey Bagapsh said "The fate of Kosovo has been ordained, thus our fate will also be determined in the nearest future."
In October 2009, Russian President Dmitry Medvedev said that parallels between Kosovo and South Ossetia are "inappropriate" and that "We are categorically against drawing parallels between the Balkan events and the events in the Caucasus. As concerns South Ossetia – it’s our unambiguous, absolutely clear position – it about repelling direct military aggression. And what was done by Russia after that, was done in full accordance with the UN Charter." and that Kosovo's unilateral declaration of independence and the events that followed "have confirmed the inadequacy of attempts to adjust the solution of complex international problems to considerations of notorious political expediency. We consider it unacceptable to do what was done in the Kosovo precedent – to use the lack of progress at negotiations as the reason for unilateral actions, including recognition of new international legal entities." and that the solution to the Kosovo problem should be based upon "the international law, decisions of the UN, resolutions of the UN Security Council and, primarily, Resolution 1244".
Armenia's Deputy Parliament Speaker Vahan Hovhannisyan has said Kosovo's independence will influence the settlement of the dispute over Nagorno-Karabakh. Foreign Minister Vardan Oskanyan declared at the UN General Assembly session in October 2007 that the Armenian side “does not understand and cannot accept the reverse logic that Kosovo was given independence and that another nation cannot obtain self-determination." Before being elected president, Armenian prime-minister Serzh Sargsyan said Kosovo was not a precedent for Karabakh. He underlined that Nagorno-Karabakh has been independent for the past 17 years. However, former President of Armenia Robert Kocharyan said "The Kosovo precedent is too important for Armenia. Certainly, this will have a positive influence for recognition of independence of Nagorno Karabakh Republic".
An Azerbaijan Foreign Ministry spokesman has said of Kosovo: "We view this illegal act as being in contradiction with international law." Following a skirmish between Armenian military forces in Nagorno-Karabakh and Azerbaijan forces which left 4 Azeri and 12 Armenian soldiers dead, Azerbaijan said it was sparked by international recognition of Kosovo. US State Department Spokesman Tom Casey rejected the comparison stating "Kosovo is not a precedent and should [not] be seen as a precedent for any other place out there in the world. It certainly isn't a precedent for Nagorno-Karabakh."
President of the unrecognised Transdniestrian Moldovan Republic, also known as Transnistria, Igor Smirnov said that "the Russian leadership, in recognising the independence of Abkhazia and South Ossetia, has underlined the priority of the expression of the wills of the people for solving such problems."
On 27 August, the day after Russia's recognition, Dmitry Medvedev met with President of Moldova Vladimir Voronin, where the Russian leader made clear that Moscow is ready to make the maximal efforts to solve the Transnistrian problem in the framework of the sovereignty of the Republic of Moldova. Relations between Moldova and Transnistria worsened after Moldova refused to support the independence of Abkhazia and South Ossetia, which Chişinău categorically rejected, considering that "as in the case of the recognition of Kosovo, this step only decreases amenability of the sides in the search for a compromise."
According to a poll of Bosnian Serbs taken by the Brussels-based Gallup Balkan Monitor in November 2010, 87 percent would support a referendum being called on Republika Srpska's independence from Bosnia and Herzegovina.
Since Kosovo's declaration of independence Bosnian Serb nationalists have called for Dodik to fulfill his promises and call a referendum. Dodik has since said he will only call a referendum if Srpska's autonomy is threatened. Despite this Bosnian Serb lawmakers passed a resolution on February 21, 2008 calling for a referendum on independence if a majority of the UN members (97 out of 192), especially members of the European Union, recognise Kosovo's declaration of independence. After the resolution was passed the U.S. cut aid to the SNSD and the resolution was condemned by the European Union. The Peace Implementation Council (PIC) overseeing Bosnia and Herzegovina said the country's entities have no right to secede. The High Representative for Bosnia and Herzegovina, Miroslav Lajcak said Srpska has "absolutely no right" to secede and that he would use his Bonn Powers "if there are threats to peace and stability" or the Dayton peace agreement.
In an interview, Dodik said if most countries recognise Kosovo's self-proclaimed independence, this would legitimise the right to secession and added "we do not see a single reason why we should not be granted the right to self-determination, the right envisaged in international conventions."
Ozdil Nami, a senior Turkish Cypriot official, told the Turkish Daily News, "When diplomatic efforts are exhausted other alternatives are put on the table. We clearly see this in Kosovo where diplomacy proved futile and other formulas are floating around. This will certainly have an impact on Cyprus." Nami suggests the resolution of Kosovo may be applied to North Cyprus well. According to Nami, "Everyone sees 2008 as the last window of opportunity for a solution to the Cyprus problem." He claims Cyprus is being warned that "other alternatives could be on the agenda" if there is no resolution. Turkish Cypriot leader Mehmet Ali Talat has rejected this connection saying "We do not see a direct link between the situation in Kosovo and the Cyprus Problem. These problems have come up through different conditions."
Since the 2001 insurgency in the Republic of Macedonia, there has been several terrorist incidents in the Republic of Macedonia involving Albanian militants. In 2012 there was some civil unrest. The Smilkovci lake killings (12 April 2012), government rocket attack (28 October 2014), Gošince attack (21 April 2015) and Kumanovo clashes (9–10 May 2015) were claimed by the National Liberation Army, which gave the message that "We do not want any framework agreement and if we see you here again, we will kill you. We want our own state."
On 20 February 2008, days following Kosovo's declaration of independence, Yasser Abed Rabbo, the top aid to President Mahmoud Abbas declared that Palestine should unilaterally announce its independence in a similar manner. Israel has criticized states that have recognized Palestine but refuse to recognize Kosovo, stating that Israel will not recognize Kosovo until all European states do so.
Russian diplomat Konstantin Kosachev said that granting Kosovo independence against the suzerainty of Serbia has opened Pandora's box, but prognosed that Catalonia would remain a part of Spain after the referendum.
Since the independence declaration, the Serb-inhabited North Kosovo, through its municipalities and subsequently the Assembly of the Community of Municipalities, was de facto independent during the North Kosovo crisis, until the Brussels Agreement (2013). In 2012, a referendum saw 99.74% of voters reject the Republic of Kosovo. A planned Community of Serb Municipalities is set to be formed.
The Unrepresented Nations and Peoples Organisation, a group of some 70 members from Abkhazia over Kurdistan to Zanzibar is and will be using the Kosovo precedent to pursue its objectives.
The influence of the Kosovo precedent is so serious that the declaration of the summit of the OSCE Parliamentary Assembly in Kyiv on 9 July 2007 contained a warning that solution of certain conflicts should not be used as a model for the...
"We, the members of the parliament of the Autonomous Republic of Crimea and the Sevastopol City Council, with regard to the charter of the United Nations and a whole range of other international documents and taking into consideration the confirmation of the status of Kosovo by the United Nations International Court of Justice on July 22, 2010, which says that unilateral declaration of independence by a part of the country doesn't violate any international norms, make this decision," says the text of the declaration, which was published by the Crimean media.
During the last year or two years, relations between the leadership of Slovakia and the native ethnic Hungarians, who live in close-knit communities in the country's south, have worsened once again, for which reason the Kosovo precedent is viewed in Slovakia as a potential treat to territorial integrity of the comparatively young Slovak state.