Authored By: Sello Mohlele
University of Fort Hare
1. Introduction
The United Nations Security Council was created in 1945 with the solemn promise of maintaining international peace and security on the basis of justice and international law. Yet, more than eighty years later, repeated failures to respond effectively to mass atrocities have raised fundamental questions about whether a legal order that claims universality retains legitimacy when its enforcement is heavily influenced by the strategic interests of a few powerful states.
This article examines the selective enforcement of international law, focusing on the role of the UN Security Council’s veto power. It argues that while international law presents itself as a universal system founded on principles of equality and justice, structural features, particularly the veto mechanism under Article 27 of the UN Charter, combined with geopolitical realities, have produced a system of inconsistent application. This selectivity undermines the normative authority of international law and weakens its capacity to prevent atrocities.
The article proceeds as follows. Section II outlines the legal framework and idealistic foundations of international law. Section III analyses the structural limitations of the UN Security Council. Section IV presents case studies of selective enforcement. Section V offers a critical evaluation of the consequences, addressing counterarguments. Finally, the conclusion offers recommendations for reform.
2. The Legal Framework: The Promise of Universal Justice
Modern international law rests on the foundational idea that rules should apply equally to all states to prevent harm and promote peace. The UN Charter (1945) explicitly lists among its purposes the maintenance of international peace and security and the promotion of respect for human rights.[1] A cornerstone of the post-1945 order is the Convention on the Prevention and Punishment of the Crime of Genocide (1948). Article I declares genocide a crime under international law, and states undertake both to punish and prevent it.[2] This was later reinforced by the Responsibility to Protect (R2P) doctrine, adopted by the UN General Assembly in 2005, which holds that when a state manifestly fails to protect its population from genocide, war crimes, or crimes against humanity, the international community has a responsibility to act.[3]
These instruments reflect an ambitious vision, which is that the law should serve humanity, not merely the interests of the powerful. However, the gap between this vision and enforcement practice reveals deep structural tensions.
3. Structural Challenges: The UN Security Council and Veto Power
Chapter VII of the UN Charter grants the Security Council primary responsibility for maintaining international peace and security. Yet Article 27(3) provides that decisions on non-procedural matters require the affirmative votes of nine members, including the concurring votes of all five permanent members (China, France, Russia, the United Kingdom, and the United States).[4]
This veto arrangement was a deliberate compromise to secure great power participation after the failure of the League of Nations. While understandable in 1945, it has created a system in which any of the P5 can block action, even in situations involving mass atrocities. Critics argue that this institutional design embeds power asymmetry into the heart of the collective security system, allowing national interest to frequently override legal obligations.[5]
4. Case Studies of Selective Enforcement
The consequences of this structure are visible in several recent situations. In Sudan, the ongoing conflict since April 2023 has caused one of the worst humanitarian crises in the world, with widespread reports of atrocities. Despite multiple Security Council briefings, meaningful collective action has been limited by divisions among permanent members.[6]
In the situation in Gaza, a UN Independent International Commission of Inquiry found reasonable grounds for acts prohibited under the Genocide Convention. Several ceasefire resolutions faced vetoes, illustrating how P5 divisions can obstruct a timely response.[7]
The conflict in Ukraine, which unfolded in 2022, prompted swift General Assembly action but limited Security Council effectiveness due to veto dynamics. Situations involving Venezuela and Iran have similarly witnessed inconsistent international responses depending on geopolitical alignments. These cases, while differing in context, demonstrate a recurring pattern, which is that the severity of violations does not always determine the vigour of international response.
5. Critical Evaluation: Consequences and Counterarguments
This selective enforcement carries profound consequences. It erodes the legitimacy of international institutions, particularly among Global South states that perceive the system as favouring powerful actors. It may also weaken deterrence, as parties to conflicts calculate that powerful patrons can shield them from accountability.
A common counterargument holds that selective enforcement is inevitable because international law lacks a central sovereign authority and must accommodate the realities of state sovereignty and power disparities. According to realist theory, law without enforcement capacity merely reflects, rather than constrains, power.[8]
While this view contains some truth, it does not fully absolve the current inconsistencies. Even accepting the limitations of the international system, the degree of selectivity observed today risks transforming international law from a normative order into performative politics. When enforcement becomes predictably tied to P5 interests, the law’s claim to universality is seriously compromised.
6. Conclusion and Recommendations
This article has demonstrated that the selective enforcement of international law, driven significantly by the UN Security Council’s veto mechanism, undermines the legitimacy and effectiveness of the international legal order. While structural realism explains some inconsistency, the current pattern goes beyond pragmatic necessity and threatens the foundational promise of the post-1945 order.
Meaningful reform could include voluntary restraint on veto use in mass atrocity situations, strengthening the role of the General Assembly, bolstering the independence and resources of the International Criminal Court, and encouraging greater regional responsibility for conflict prevention. Although political obstacles are substantial, incremental improvements are both necessary and possible if international law is to retain credibility.
Ultimately, a legal system that systematically fails to apply its rules equally risks becoming what Frédéric Bastiat warned against : an instrument of injustice rather than justice.[9]
Bibliography
Bastiat Frédéric, The Law (1850) (translated by Dean Russell, Foundation for Economic Education 1998).
Charter of the United Nations (adopted 26 June 1945, entered into force 24 October 1945) 1 UNTS XVI.
Convention on the Prevention and Punishment of the Crime of Genocide (adopted 9 December 1948, entered into force 12 January 1951) 78 UNTS 277.
Independent International Commission of Inquiry on the Occupied Palestinian Territory, including East Jerusalem, and Israel, Legal analysis of the conduct of Israel in Gaza pursuant to the Convention on the Prevention and Punishment of the Crime of Genocide (A/HRC/60/CRP.3, 16 September 2025).
Morgenthau Hans J, *Politics Among Nations: The Struggle for Power and Peace* (7th edn, McGraw-Hill 2006).
Simma Bruno and others (eds), The Charter of the United Nations: A Commentary (3rd edn, Oxford University Press 2012).
UN News, ‘World failing Sudan as war enters a fourth year’ (14 April 2026) <https://news.un.org/en/story/2026/04/1167301> accessed 12 May 2026.
UNGA Res 60/1 (24 October 2005).
[1] Charter of the United Nations (adopted 26 June 1945, entered into force 24 October 1945) 1 UNTS XVI, arts 1–2.
[2] Convention on the Prevention and Punishment of the Crime of Genocide (adopted 9 December 1948, entered into force 12 January 1951) 78 UNTS 277.
[3] UNGA Res 60/1 (24 October 2005) paras 138–139.
[4] Charter of the United Nations (n 1) art 27(3).
[5] See generally Bruno Simma and others (eds), *The Charter of the United Nations: A Commentary* (3rd edn, Oxford University Press 2012).
[6] UN News, ‘World failing Sudan as war enters a fourth year’ (14 April 2026) <https://news.un.org/en/story/2026/04/1167301> accessed 12 May 2026.
[7] Independent International Commission of Inquiry on the Occupied Palestinian Territory, including East Jerusalem, and Israel, Legal analysis of the conduct of Israel in Gaza pursuant to the Convention on the Prevention and Punishment of the Crime of Genocide (A/HRC/60/CRP.3, 16 September 2025).
[8] Hans J Morgenthau, Politics Among Nations: The Struggle for Power and Peace (7th edn, McGraw-Hill 2006).
[9] Frédéric Bastiat, The Law (1850) (translated by Dean Russell, Foundation for Economic Education 1998) 23.
