Serbia's Efforts to Destabilize Kosovo: Hybrid Warfare Tactics and the Role of Serbian Intelligence and Security Services

In a tense period, the arrest of 16 individuals, including four active officers of the Serbian intelligence and security services, constitutes an important development that sheds light on Serbia’s ongoing activities in Kosovo. This operation, coordinated by Kosovo’s security institutions, demonstrates that Serbia continues to interfere in Kosovo’s internal affairs, undermining the country’s security and stability. The arrest of these individuals is a strong blow to Serbia’s plans to destabilize Kosovo and support activities aimed at gathering information on potential targets, as well as support for terrorist groups, particularly those operating in the northern region of Kosovo.

The intelligence and espionage activities organized by Serbia, through undercover agents and security service officers, as well as members of the Banjska terrorist group, are part of a broader strategy to undermine Kosovo’s authority and hinder its efforts to consolidate sovereignty and integration into international institutions. Serbia continues to use hybrid warfare tactics to undermine Kosovo’s stability, utilizing undercover agents, individuals with direct ties to the Serbian regime, and using the media and religious institutions to exert influence and create interethnic and interreligious tensions.

One of the key moments in this development is the emergence of evidence of the arrested individuals’ connections to Serbian military intelligence and their proximity to extremist groups, such as those operating in the northern municipalities and beyond. This reflects a strategy of Serbian interference in Kosovo’s internal affairs through espionage operations and support for criminal and terrorist groups. Such actions are part of hybrid warfare, which involves a series of coordinated actions aimed at destabilizing Kosovo without the use of direct military force. The use of individuals associated with Serbian security services as “infiltrators” to achieve strategic objectives has a direct impact on Kosovo’s security, creating an insecure and tense environment.

Another worrying aspect is the use of religious institutions for political purposes. The involvement of suspected individuals in institutions such as the Bogoslavia Orthodox Seminary demonstrates a sophisticated and covert way to strengthen Serbian influence in Kosovo. This use of religious institutions, which can be used to create inter-ethnic and inter-religious divisions, is a destabilizing strategy that requires a strong response from Kosovo institutions and civil society. Serbia has a history of using such mechanisms to incite tensions and undermine the integrity of the Kosovo state, a fact that highlights the importance of maintaining internal stability and close cooperation between security institutions and society.

In this context, Kosovo has faced ongoing challenges in protecting its sovereignty and stability, undertaking efforts to clean up the political environment and prevent external influences that aim to undermine its integrity. Kosovo has faced an ongoing challenge to maintain its independence and integrity, countering the efforts of the Serbian state to create concerns and tensions, as well as to undermine democratic processes and the development of Kosovo’s institutions. The use of sophisticated methods, including threats, enticements and blackmail against non-Serb MPs and groups, demonstrates a continuous strategy by Serbia to interfere in Kosovo’s internal processes, with the aim of creating ongoing tensions that can be exploited to create a crisis. This type of influence is a form of hybrid warfare that aims to undermine the strengthening of Kosovo’s institutions and create an insecure climate that could benefit from the withdrawal of international support. In this way, Kosovo continues to face a significant challenge to maintain sustainable internal stability and ensure its sustainability in the international arena, while trying to balance internal and external interests.

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The Serbian government is facing major challenges due to internal and external developments that have had a direct impact on its stability. Serbia continues to use tactics to undermine the stability of Kosovo, supporting radical groups and spreading propaganda, creating tensions in the region. This has made it more difficult for Kosovo to consolidate its sovereignty and strengthen international ties.

Massive protests erupted within Serbia after the tragedy in Novi Sad in November 2024, reflecting deep dissatisfaction with corruption and poor state management. The protests, led mainly by students, demanded transparency and accountability for the tragic incident. After the resignation of Prime Minister Miloš Vučević in January 2025, the protests grew into a broad movement against corruption and authoritarianism, culminating in over 300.000 participants in Belgrade in March 2025.

To distract attention from domestic problems, President Vučić has accused other states, including Kosovo and Croatia, of involvement in the unrest. He has accused "Croatian secret services" and Kosovo media of being involved in organizing the protests, using this narrative to fuel nationalist sentiment and justify harsh actions against protesters. This has increased tensions with Kosovo and reflected Serbia's efforts to maintain internal stability by creating an "external enemy."

Measures that the Government of Kosovo should take to prevent these phenomena.

The Government of Kosovo must take coordinated and effective measures to address these challenges:

- Strengthening security institutions: Increasing the capacity of security institutions to monitor and prevent espionage and hybrid warfare activities is essential. This includes training personnel and increasing cooperation with international partners.

- Improving public diplomacy: Creating an effective communication strategy to counter disinformation and negative narratives spread by Serbia and its allies is essential. This approach should include the use of social media and international communication channels.

- International engagement: Strengthening relations with international allies, including the United States, the European Union, and the United Kingdom, is key to providing diplomatic and practical support in addressing these challenges.

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- Increasing transparency and the rule of law: Improving transparency in governance and strengthening the rule of law will increase citizen trust and reduce opportunities for illegal and corrupt activities.

It is imperative that the Government of Kosovo act decisively and swiftly to address these threats, building on international partnerships and strengthening domestic institutions. This requires close coordination with strategic allies, including NATO, the European Union and the United States of America, to provide technical and diplomatic support. It is also important to invest in strengthening security and justice institutions, to guarantee the rule of law and long-term stability. Only in this way can stability and security in the country be maintained, preventing external and internal efforts that threaten the integrity and development of Kosovo.