Private Military and Security Companies in International Relations

The role of private military and security companies (PMSCs) has become increasingly prominent in post–Cold War international relations, as states and non-state actors alike seek to supplement or supplant traditional military forces. These entities operate across a spectrum of activities, from logistical support and protection of strategic infrastructure to intelligence analysis and advisory services. Their expansion reflects shifts in state attitudes towards the privatisation of force, driven by budgetary constraints, the demand for specialised expertise and the desire to mitigate political risk. While PMSCs can enhance operational flexibility and rapid deployment, their proliferation raises critical concerns about accountability, legal status, human rights compliance and the erosion of the state monopoly on legitimate violence. Efforts to regulate these actors encompass national legislation, voluntary codes of conduct and international frameworks, yet enforcement remains uneven. Advances in technology, including remote surveillance and data analytics, are reshaping PMSC capabilities, and their deployment in hybrid conflicts and peacekeeping operations underscores their global significance. The balance between strategic utility and legal–ethical constraints continues to animate scholarly and policy debates, highlighting the evolving intersection of private actors and state sovereignty in contemporary security governance.

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Private Military and Security Companies in International Relations publication trend

The graph below shows the total number of articles in private military and security companies in international relations across all publications each year (not limited to Nature Index journals).

Technical terms

Private Military and Security Company (PMSC): A corporate entity providing military, security or related services under contract, operating alongside or in place of state forces.

Mercenary: An individual recruited to participate in armed conflict for private gain, without nationality or direct affiliation to a belligerent party.

Securitisation: The process by which actors frame issues as existential security threats, justifying extraordinary measures and resource allocation.

Hybrid warfare: A strategy combining conventional military operations, irregular tactics and cyber or informational tools to achieve political objectives.

Outsourcing: The delegation of state military or security functions to non-governmental firms, typically to achieve cost savings or access specialised expertise.

References

1. Bulgarians’ Motivation for Participation in Private Military Companies. Bulgarian Journal of International Economics and Politics (2023).
2. Private Military and Security Companies (PMSCs) in the Modern International Processes. Journal of International Analytics (2022).
3. SPECIFICS OF PRIVATE COMPANIES’ ACTIVITIES IN THE FIELD OF MILITARY BUSINESS IN THE CONTEXT OF RISIS SHOCK: INTERNATIONAL EXPERIENCE. Актуальні проблеми міжнародних відносин (2024).
4. CURRENT TRENDS OF MILITARY OUTSOURCING DEVELOPMENT: INSTITUTIONAL AND ECONOMIC ASPECTS. Випробування та сертифікація (2023).