Vucic at the UN: The Limits of Belgrade's Legal Argument on Kosovo

Foreword

The debate over Kosovo continues to be one of the most complex issues within the European legal and political order. For this reason, every statement by Serbian institutions that relies on the Charter of the United Nations, the principle of territorial integrity, and particularly Resolution 1244 requires examination not only as a political position, but also as a legal argument.

This article seeks precisely to do that: to examine, in chronological and legal-political terms, the limits of Belgrade's argument concerning Kosovo, starting from the legal documents and acts that Serbia itself invokes as the basis of its position. At the center of the analysis is Resolution 1244, but it is not treated separately from the circumstances that led to its adoption, nor from the institutional and legal developments that followed.

The purpose is not to replace one political narrative with another. Rather, the aim is to move the debate away from selective interpretations toward a comprehensive reading of the documents, norms, and international jurisprudence. Only by considering together the text of Resolution 1244, the legal history of Yugoslavia, developments after 1999, and the 2010 Advisory Opinion of the International Court of Justice can it be understood how far Belgrade's legal argument extends and where its limits lie.

In this sense, the analysis that follows does not seek to provide a definitive political answer regarding Kosovo, but to formulate the legal question in its most precise form: what do the documents actually say, and what conclusions can be drawn from them today?

A Legal-Political Analysis of the Statement by the President of Serbia and the Use of Resolution 1244

In his address to the General Debate of the 81st session of the United Nations General Assembly, on 23 September 2026, President of the Republic of Serbia Aleksandar Vu?i? placed the issue of Kosovo within a broader argument concerning the international order. He stated that Serbia would continue to defend its territorial integrity, the Charter of the United Nations, and Security Council Resolution 1244. At the same time, he criticized the position of Western countries regarding Serbia's territorial integrity and compared this issue with the way in which, according to him, the international community treats the territorial integrity of Ukraine.¹

The statement is political, but the argument employed by it is, to a considerable extent, legal. Precisely for this reason, it cannot be analyzed solely through political rhetoric. It must be examined against the documents to which Vu?i? himself refers: the UN Charter and Resolution 1244, but also against the legal and institutional developments that have taken place since 1999.

Vu?i? speaks today at the UN on behalf of the Republic of Serbia. This is a fundamental distinction. He does not speak on behalf of socialist Yugoslavia, nor on behalf of the Federal Republic of Yugoslavia of 1999, nor on behalf of a legal concept called "historical Serbia." The history of the Serbian state is part of the identity and political argument of present-day Serbia, but it is not the same thing as the legal personality of the state within the contemporary international system.

Serbia of the nineteenth and early twentieth centuries expanded territorially and was subsequently incorporated into the Yugoslav state project. In 1918, the Kingdom of Serbs, Croats and Slovenes was established, later becoming the Kingdom of Yugoslavia. After the Second World War, Serbia became one of the six republics of the Socialist Federal Republic of Yugoslavia. Kosovo and Vojvodina were autonomous provinces within the Republic of Serbia. This constitutional order was profoundly altered during the crisis and dissolution of Yugoslavia in the 1990s.

The 1974 Constitution of the SFRY listed the six republics and the two autonomous provinces — Kosovo and Vojvodina — as constituent elements of the Federation. At the same time, they remained constituent parts of the Socialist Republic of Serbia. Thus, they had a dual constitutional status: they were autonomous units within Serbia and, simultaneously, constituent elements of the Yugoslav federation. This status is also described in the documentation submitted in the proceedings before the International Court of Justice.²

This distinction is important for understanding the Yugoslav constitutional order of 1974. Kosovo and Vojvodina were not republics, but neither were they simply ordinary administrative units of Serbia. Their constitutional status granted them broad autonomy and a direct position within the federal structure. This fact forms part of the legal chronology that must be taken into account when analyzing how the subsequent constitutional and political crisis of Yugoslavia developed.

The dissolution of Yugoslavia was not merely an institutional process. It was accompanied by wars, expulsions, population displacement, and serious crimes. Individual responsibility for crimes committed during the conflicts in Croatia, Bosnia and Herzegovina, and Kosovo was addressed by the International Criminal Tribunal for the former Yugoslavia. At the level of state responsibility, the International Court of Justice, in its 2007 judgment in the case of Bosnia and Herzegovina v. Serbia and Montenegro, found that genocide had been committed in Srebrenica and that Serbia had violated its obligation to prevent it and its obligation to cooperate with the Hague Tribunal. At the same time, the Court did not find that Serbia itself had committed genocide, conspired to commit it, or been complicit in it.³ This legal distinction is essential to any serious analysis.

In Kosovo, the armed conflict and humanitarian crisis of 1998–1999 led to international intervention and the creation of a new institutional order. This is the period in which Resolution 1244 must be situated.

On 10 June 1999, the Security Council adopted Resolution 1244, acting under Chapter VII of the UN Charter. The resolution reaffirmed, among other things, the commitment of Member States to the sovereignty and territorial integrity of the Federal Republic of Yugoslavia, while at the same time establishing a special international regime for Kosovo. It authorized an international security presence and established an international civilian presence tasked with the interim administration of Kosovo. The resolution also provided for the development of provisional institutions of self-government and a political process for determining Kosovo's future status.?

This combination of provisions is fundamental. Resolution 1244 is not merely the sentence referring to the sovereignty and territorial integrity of the Federal Republic of Yugoslavia. It is a complex legal instrument, adopted under exceptional circumstances, which simultaneously reaffirms certain principles and establishes a temporary international regime over Kosovo.

Therefore, the political formula according to which "Resolution 1244 says that Kosovo is Serbia" does not describe the full legal content of the resolution. Its text must be read as a whole. The resolution itself provides for temporary international administration and a political process concerning the future status of Kosovo.?

The reference to the state entity of 1999 also requires precision. At that time, the Federal Republic of Yugoslavia existed, consisting of Serbia and Montenegro. The FRY was admitted as a new Member of the United Nations on 1 November 2000. On 4 February 2003, the name of the state was changed to Serbia and Montenegro. Following Montenegro's declaration of independence on 3 June 2006, the Republic of Serbia continued the membership of Serbia and Montenegro in the UN, while Montenegro became a new Member.?

This chronology is important not to produce a theory about the "disappearance" of Serbia's continuity, but to identify precisely the state entities and legal moments involved. Resolution 1244 was adopted in 1999 in a context in which the relevant state entity was the FRY. Today, at the UN, Vu?i? represents the Republic of Serbia. The legal history between these two moments cannot be bypassed with a single formula.

This becomes even more important when Resolution 1244 is used as the basis for a contemporary territorial claim. The legal question is not whether Resolution 1244 exists or whether it remains part of the legal history of Kosovo. It does exist and remains an act of the Security Council. The question is what legal conclusion can be drawn from it today, taking into account the full text of the resolution and the legal developments that have occurred since its adoption.

It is precisely here that the Advisory Opinion of the International Court of Justice of 22 July 2010 is decisive. The ICJ was asked whether Kosovo's declaration of independence of 17 February 2008 was in accordance with international law. The Court responded that the adoption of the declaration had not violated general international law, Resolution 1244, or the Constitutional Framework established within the framework of UNMIK administration.?

The ICJ specifically analyzed Resolution 1244. It found that the resolution had established a temporary and exceptional international regime for Kosovo and that its purpose was to establish interim administration and stabilize the territory, without making a final determination of status. The Court also concluded that Resolution 1244 did not contain an applicable prohibition against the authors of the declaration of independence of 17 February 2008.?

This is an important legal limitation on the use of Resolution 1244 as a conclusive argument. It cannot be said that the ICJ determined Kosovo to be part of Serbia on the basis of Resolution 1244. On the contrary, the Court, in response to the question submitted by the General Assembly, found that the declaration of independence had violated neither general international law nor Resolution 1244.?

This does not mean that the ICJ Advisory Opinion resolved the entire political dispute over the status of Kosovo. It did not. The Court was not asked whether Kosovo should be recognized as a state by all states, nor did it establish a general obligation to recognize it. But legally, it is impossible for a contemporary analysis of Resolution 1244 to ignore the Court's conclusions.

The argument concerning territorial integrity must likewise be placed within the same framework. Vu?i? presents Serbia's territorial integrity as an issue directly connected to the UN Charter. The UN Charter protects the territorial integrity of states, but within the same normative system it also establishes sovereign equality, the peaceful settlement of disputes, and the prohibition of the threat or use of force against the territorial integrity or political independence of any state.¹?

Therefore, territorial integrity cannot be separated from the history of the use of force and from the legal consequences of conflicts. In the case of the former Yugoslavia, territorial claims, armed conflicts, and violence against civilian populations form part of the context that led to international intervention and international administration in Kosovo.

This is why 1999 cannot be treated as an isolated point in time. Before Resolution 1244 there were conflict, repression, expulsions, and crimes; after it came international administration, the creation of provisional institutions, negotiations on status, the declaration of independence in 2008, and the ICJ Advisory Opinion in 2010. Each of these moments forms part of the legal history that must be taken into account.

The political use of the concepts "Greater Serbia" and "Serbian World" must also be viewed within this framework. Linguistic, cultural, and identity-based ties among Serbs living in different states do not, in themselves, constitute a violation of international law. The legal issue arises when ethnic identity is transformed into a basis for territorial claims, changes to borders, or the exercise of state authority in the territory of another state. The history of the Yugoslav wars shows that such ideas have also had a territorial and political dimension and have been addressed in international judicial proceedings.

Therefore, today's debate cannot be constructed solely around the question of what Kosovo was in 1999. It must also analyze what happened to the legal order established in Kosovo after 1999 and what significance should be attached to the acts and decisions that followed.

This is also the point at which history must be clearly distinguished from law. Serbia may use its history to explain the political, cultural, and identity-based significance it attributes to Kosovo. But history, in itself, is not an immutable legal title to territory. A state's territorial claim must be assessed within the framework of international legal norms and the legal developments that have taken place in the meantime.

In this sense, Vu?i? has the right to present the position of the Republic of Serbia at the UN. But reference to territorial integrity, the UN Charter, and Resolution 1244 does not, by itself, conclude the legal analysis. On the contrary, these references make a comprehensive analysis of the documents necessary.

A state cannot select only the part of an international document that serves its argument while leaving aside the other provisions of the same document. Likewise, an international judicial opinion cannot be disregarded merely because its conclusions do not correspond to the political interpretation of one party.

In the case of Kosovo, Resolution 1244 must be read together with the international regime it created; with subsequent institutional developments; with the political process concerning status; with the 2008 declaration of independence; and with the 2010 Advisory Opinion of the ICJ. This is not a matter of political preference. It is a requirement of legal methodology.

Equally important is the same standard. If Serbia seeks territorial integrity to be respected as a fundamental principle of the international order, that principle must be applied consistently and not selectively. The same applies to the prohibition of the use of force, state sovereignty, the protection of civilian populations, and the peaceful settlement of disputes.

This does not eliminate the political dispute between Belgrade and Pristina. But it places that dispute where a serious international debate should take place: in the field of facts, documents, norms, and jurisprudence.

Vu?i?, at the UN, speaks as President of the present-day Republic of Serbia. He may bring Serbia's history, its constitutional position, and its interpretation of Resolution 1244 to the international table. But present-day Serbia cannot treat 1999 as though legal history had stopped there. Between 1999 and the present, significant state, institutional, and legal changes have taken place.

Therefore, the fundamental question is not whether Belgrade can cite Resolution 1244. It can. The question is what it can legally claim on the basis of it today.

And this is where the limit of the argument lies: Resolution 1244 cannot be read outside its text; 1999 cannot be detached from the circumstances that produced it; the status of Kosovo cannot be analyzed without taking subsequent developments into account; and the 2010 ICJ Advisory Opinion cannot be left out of an analysis that claims to rely on international law.

Ultimately, the issue is not which side tells history more convincingly. The issue is which argument stands when confronted with the entirety of the facts, documents, and legal norms.

It is precisely at this point that Vu?i?'s statement at the UN should be read: not only as a political position of Serbia, but as a legal claim that must be measured against the entire international legal order created before 1999, in 1999, and throughout the years that followed.

Afterword

The debate over Kosovo cannot be concluded with a single citation, nor with a document detached from its context. Neither Resolution 1244, nor the Charter of the United Nations, nor the constitutional history of Yugoslavia, nor the developments after 1999 can be interpreted in isolation.

This is precisely where the importance of a legal approach lies: it requires the same standard to be applied to all documents and all parties. If an argument relies on international law, then it must confront the whole body of international law relevant to the issue, not merely those parts that support a particular conclusion.

Resolution 1244 remains a fundamental document in the legal history of Kosovo. But its meaning is not determined solely by one paragraph or by a political formulation. It must be read as a whole, in the context of 1999 and together with the developments that followed. Likewise, the Advisory Opinion of the International Court of Justice of 2010 is an integral part of any contemporary analysis that claims to rely on international law.

This does not mean that the political dispute has disappeared. On the contrary, it continues. But a political dispute does not alter the content of a legal document, and a political position cannot replace legal analysis.

Ultimately, the question that remains is simple in formulation but complex in its answer: when a state invokes international law to support a claim of its own, should only that part of the law which serves that claim be taken into consideration, or the entire legal framework that has developed over the years?

For Kosovo, the answer requires precisely what this article has sought to do: a return to the documents, chronology, facts, and jurisprudence. History can be interpreted in different ways, politics can change, and state narratives can collide, but a legal argument must stand against the entirety of the legal sources upon which it claims to be based.

Footnotes:

1.Republic of Serbia, President of the Republic of Serbia Aleksandar Vu?i?, Address at the General Debate of the 81st Session of the United Nations General Assembly, 23 September 2026. The official speech presents Vu?i? in his capacity as President of the Republic of Serbia and records his references to territorial integrity, the UN Charter, and the issue of Kosovo.

2.On the constitutional status of Kosovo and Vojvodina within the Yugoslav federal system, see United Nations documentation describing Yugoslavia as a federation composed of six republics and, within the Socialist Republic of Serbia, two autonomous provinces: Vojvodina and Kosovo.

3.International Court of Justice, Application of the Convention on the Prevention and Punishment of the Crime of Genocide (Bosnia and Herzegovina v. Serbia and Montenegro), Judgment, 26 February 2007. The Court found that Serbia had violated its obligation to prevent genocide in Srebrenica and its obligation to cooperate fully with the ICTY; at the same time, it did not find that Serbia had committed, conspired to commit, or been complicit in genocide.

4.United Nations Security Council, Resolution 1244 (1999), S/RES/1244, 10 June 1999. The resolution was adopted under Chapter VII and established an international civilian and security presence in Kosovo, including interim international administration.

5.Ibid., particularly the provisions reaffirming the sovereignty and territorial integrity of the Federal Republic of Yugoslavia and those providing for interim international administration and a political process concerning the future status of Kosovo.

6.United Nations, Historical Information – Serbia; Serbia and Montenegro. Official UN documentation establishes that the FRY was admitted as a new Member on 1 November 2000; the state was named "Serbia and Montenegro" from 4 February 2003 until 2 June 2006; and following Montenegro's independence, the Republic of Serbia continued the membership of Serbia and Montenegro in the UN.

7.International Court of Justice, Accordance with International Law of the Unilateral Declaration of Independence in Respect of Kosovo, Advisory Opinion, 22 July 2010. The Court concluded that Kosovo's declaration of independence of 17 February 2008 had not violated international law.

8.Ibid. The ICJ analyzed Resolution 1244 as part of the applicable international law and described the regime created by it as a temporary and exceptional regime, intended for the interim administration and stabilization of Kosovo. The Court also concluded that Resolution 1244 did not prohibit the declaration of independence of 17 February 2008.

9.Ibid. In its conclusion, the Court found that the adoption of the declaration of independence had not violated general international law, Resolution 1244, or the Constitutional Framework.

10.United Nations, Charter of the United Nations, Article 2, particularly the principles of sovereign equality, peaceful settlement of disputes, and the prohibition of the threat or use of force against the territorial integrity or political independence of any state.

Prishtina,24.09.2026