Sovereignty

Sovereignty is the claim to be the final authority in a domain: there is no higher authority to which appeal can be made, and no rival authority with an equal claim inside the same space. In its classic modern form it has two faces. Internally, the sovereign is the supreme source of law over a territory and its people. Externally, the sovereign is independent of other authorities and is recognised by them as an equal.

The concept matters for alternative governance because almost every experiment collides with it. Charter cities, special economic zones, micronations, seasteads, indigenous autonomies and network states all negotiate how much authority they can exercise without a recognised sovereign's permission, and what happens when they try.

Bodin and Hobbes

Jean Bodin, writing during the French wars of religion, defined sovereignty in Les Six Livres de la République (1576) as the absolute and perpetual power of a commonwealth, chiefly the power to make law without the consent of others. Bodin still thought the sovereign bound by divine and natural law. Thomas Hobbes in Leviathan (1651) grounded sovereignty in a covenant among individuals escaping the state of nature and argued that it must be undivided, since divided authority invites civil war.

Popular sovereignty

Rousseau relocated sovereignty in the people acting through the general will, and the American and French revolutions turned popular sovereignty into the official foundation of constitutional states. Constitutional theory then distinguished the constituent power of the people, which makes constitutions, from the constituted powers of government, which act under them.

Four meanings

Stephen Krasner distinguished four things often called sovereignty:

1. Domestic sovereignty: the organisation and effectiveness of authority within a state.
2. Interdependence sovereignty: the ability to control flows across borders, of goods, money, people and information.
3. International legal sovereignty: mutual recognition between juridically independent territorial entities.
4. Westphalian sovereignty: the exclusion of external actors from domestic authority structures.

Krasner argued that these often diverge and that rulers violate the norms of Westphalian sovereignty whenever it suits them, hence his description of the system as "organized hypocrisy".

Statehood criteria

The 1933 Montevideo Convention lists the qualifications of a state as a person of international law: a permanent population, a defined territory, government, and capacity to enter into relations with other states. It also declares that the political existence of a state is independent of recognition. In practice recognition remains decisive for access to treaties, finance and international organisations, which is why micronations that meet some Montevideo criteria on paper remain legally marginal.

The Westphalian question

The Peace of Westphalia (1648) is often said to have founded the system of sovereign states. Historians and international-relations scholars such as Andreas Osiander have challenged this as a myth: on Osiander's account, the image of 1648 that international relations relies on is largely imaginary, a product of nineteenth- and twentieth-century fixation on sovereignty, and the post-1648 Holy Roman Empire does not fit the model.

• Pooled sovereignty in the European Union: member states transfer competences to common institutions and accept the primacy of EU law in those fields, while retaining control over treaty change and over membership itself.
• Federal and confederal divisions: in federations such as Switzerland or the United States, sovereignty is divided between levels, contradicting Hobbes's claim that it must be indivisible.
• Responsibility to protect: in the 2005 World Summit Outcome, UN member states accepted that each state has a responsibility to protect its population from genocide, war crimes, ethnic cleansing and crimes against humanity, and that the international community should act through the Security Council when states manifestly fail.
• Decolonisation disputes: in its 2019 advisory opinion on the Chagos Archipelago, the International Court of Justice found that the decolonisation of Mauritius had not been lawfully completed and that the United Kingdom should end its administration as rapidly as possible. On 22 May 2025 the two governments signed a treaty on the Chagos Archipelago, including Diego Garcia; as of October 2026 it had not been ratified or entered into force.
• Micronations and seasteads: projects such as Liberland or the Republic of Minerva claimed sovereignty over unclaimed or newly created land; neither achieved recognition.
• Shared and international zones: the Tangier International Zone (1923–1956) was administered by a group of powers rather than a single sovereign.
• Digital claims: network-state proposals, e-residency schemes and debates about "digital sovereignty" over data and platforms extend the concept beyond territory.

• Empirical fiction: Krasner and others argue that sovereignty has always been compromised by intervention, contracts and conventions, so the ideal type misdescribes how states behave.
• Moral critique: cosmopolitans argue that sovereignty has shielded atrocities and that human rights should limit it; defenders reply that sovereignty protects weaker states from domination by stronger ones.
• Colonial history: the sovereign-state system expanded through empire, and indigenous polities with their own forms of authority were often denied recognition as sovereign.
• Indivisibility versus pluralism: pluralist and polycentric theorists (including the Ostroms and Proudhon) reject the idea that any single authority must be supreme and see overlapping jurisdictions as normal and desirable.
• Globalisation: interdependence sovereignty has eroded through capital mobility and digital networks, even where legal sovereignty is unchallenged.

Sovereignty remains the organising principle of international law and the gatekeeper for any governance experiment that wants legal standing. Its content, however, is more flexible than its classic definitions suggest: divided, pooled, delegated and leased arrangements are common. For institution designers the practical question is rarely "sovereign or not" but which bundle of powers (law-making, courts, taxation, borders, money, data) is held by whom, and who recognises that allocation.

• Daniel Philpott, "Sovereignty", Stanford Encyclopedia of Philosophy
• Andreas Osiander, "Sovereignty, International Relations, and the Westphalian Myth" (2001)
• Montevideo Convention on the Rights and Duties of States (1933)
• ICJ, Chagos Archipelago advisory opinion (2019)
• UK–Mauritius treaty concerning the Chagos Archipelago (2025), UK Parliament treaty record
• Stephen D. Krasner, Sovereignty: Organized Hypocrisy (Princeton University Press, 1999)