Introduction
State sovereignty — the principle that governments exercise supreme authority within their borders without external interference — remains one of the foundational norms of the international system. However, the contemporary world presents a series of pressures on this norm: from supranational institutions and global economic interdependence to humanitarian intervention and the reach of non-state actors. This response argues that while sovereignty remains formally intact as a legal principle, its practical exercise is increasingly constrained by economic, political, and normative forces. Evidence will be drawn from the Belt and Road Initiative and the international response to the Russia–Ukraine conflict.
Body Paragraph 1 — BRI and Economic Sovereignty
China's Belt and Road Initiative (BRI) illustrates how economic interdependence can constrain the sovereign decision-making of participating states, particularly those with weaker economies. Sri Lanka's Hambantota Port, which was leased to China Merchants Port Holdings for 99 years in 2017 following Sri Lanka's inability to repay BRI loans, is the most cited example of what critics term "debt-trap diplomacy". While the Chinese government disputes the "debt trap" characterisation, the lease arrangement demonstrates that formal sovereignty — Sri Lanka's legal ownership of its territory — did not prevent a significant transfer of operational control to a foreign state-owned enterprise. For a researcher applying the concept of sovereignty, this is instructive: it reveals that sovereignty operates not just as a legal status but as a practical capacity, and that economic dependency can erode that capacity without a single formal breach of international law. This suggests the threat to sovereignty in the contemporary world is not always direct or coercive — it can be structural, operating through the logic of debt and dependency rather than military force. This connects to the concept of interdependence: when states become asymmetrically dependent on a more powerful partner, the formal equality of sovereignty masks real inequalities of power.
Body Paragraph 2 — Russia–Ukraine and Sovereignty Norms
The Russia–Ukraine conflict, which escalated into a full-scale invasion in February 2022, represents a direct and violent challenge to Ukraine's sovereignty — but it also reveals the limits of international sovereignty norms as a protective mechanism. Russia's invasion violated Ukraine's territorial integrity and was condemned by 141 states at the UN General Assembly in Resolution ES-11/1 (March 2022), yet the UN Security Council was paralysed by Russia's veto, preventing any binding collective response. This reveals a structural contradiction in the international sovereignty order: the same institution designed to protect state sovereignty — the UN Security Council — can be disabled by a permanent member who is the source of the violation. NATO's decision to provide material support for Ukraine — including weapons, intelligence sharing, and economic sanctions against Russia — further complicates the sovereignty picture. While framed as support for Ukraine's sovereign right to self-defence, it also demonstrates that state sovereignty is increasingly exercised through coalitions and alliances rather than independently. The conflict therefore supports the argument that sovereignty as a norm retains significant rhetorical and legitimising power — virtually every actor in the conflict, including Russia, justified its actions in sovereign terms — but that this norm is increasingly difficult to enforce against states with sufficient military and economic power. This links to the concept of legitimacy: sovereignty norms derive their force not from automatic enforcement but from the collective willingness of states to uphold them, and that willingness is uneven and contested.
Body Paragraph 3 — Counterargument: Redefinition, Not Erosion
On the other hand, it can be argued that sovereignty is not under threat but is being voluntarily redefined by states pursuing collective interests. EU member states have ceded significant areas of sovereign authority — over trade policy, competition law, monetary policy in the eurozone, and much of environmental regulation — to supranational EU institutions, without being coerced to do so. This is better understood as a pooling of sovereignty than its erosion: states retain ultimate authority through mechanisms like Article 50 (demonstrated by Brexit), but they choose to exercise that authority collectively in areas where pooled action produces better outcomes than individual action. Similarly, Paris Agreement signatories voluntarily accepted nationally determined contributions (NDCs) — commitments to reduce emissions — as a condition of membership, accepting external accountability for an area traditionally governed solely by domestic policy. While these examples demonstrate real constraints on what states can do unilaterally, they do not support the claim that sovereignty is under threat in the sense of being undermined against states' will. Rather, they suggest that sovereignty is being exercised differently in response to collective challenges. This distinction matters for the concept of power: states that voluntarily cede authority retain structural power, whereas states coerced into dependency — as seen in the BRI examples — experience a real reduction in sovereign capacity.
Conclusion
Sovereignty is under significant pressure in the contemporary world, but the nature and extent of that pressure is asymmetric. For powerful states — those with strong economies, military capability, and institutional influence — sovereignty remains a robust and largely effective norm. Russia demonstrates that a major power can violate another state's sovereignty at significant cost but without losing its own sovereign standing. The United States continues to project power globally while invoking sovereignty norms selectively. For weaker states, however, sovereignty operates differently: economic dependency, debt, and structural integration into asymmetric partnerships all constrain what formal sovereignty means in practice. The extent to which sovereignty is "under threat" therefore depends on the state in question. Sovereignty is not collapsing — it remains the dominant organising principle of international relations — but it is increasingly hollowed out for those states least able to defend it.