South Africa Asked for Universal Law. It Got It.
Pretoria went to The Hague to make principles travel against Israel. Its own pleadings explain why those principles do not stop at Israel’s border — or Africa’s.
Disclosure: I advise the Mthwakazi Republic Party, Office of the President, on recognition doctrine and sovereignty.
South Africa’s problem began with a word it chose itself: universal. In its 2023 written statement to the International Court of Justice on Palestine, Pretoria described self-determination not merely as a Palestinian claim but as “a right of all peoples in the world.” A few pages later it called the right peremptory, or jus cogens, said that it had an erga omnes character, and said that all states have a collective legal interest in its realization and protection.[1]
Those sentences were aimed at Israel. Their grammar was not. Once a state tells the world’s highest court that a principle belongs to all peoples, concerns all states and has the character of a peremptory norm, the principle becomes difficult to quarantine to the dispute for which it was deployed.
That was not an isolated flourish. Five years earlier, in the Chagos advisory proceedings, South Africa had already described self-determination as a fundamental human right and a jus cogens right. Its paragraph 60 is even harder to contain: “Without self-determination, decolonization cannot be realized.”[2]
South Africa did not stop there. In the same pleading it said self-determination goes “hand in hand” with territorial integrity, and that impairment of territorial integrity can obstruct a people’s ability to realize self-determination “both internally and externally.” In that advisory proceeding, Pretoria also argued that the presence of political implications, domestic matters or contentious issues did not prevent the Court from exercising its advisory jurisdiction over the legal question before it.[3]
A written pleading is not a judgment. It does not freeze a government’s legal analysis forever, and South Africa remains free to distinguish one case from another. But that freedom is not the same thing as costless escape. Pretoria can narrow its earlier arguments, abandon them, or explain why they produce different results in different places. What it cannot credibly do is erase the fact that these were the propositions it chose to place before the Court.
The mess is not secession. It is the test.
The easiest caricature of this argument is that South Africa somehow created a worldwide legal right for every separatist movement to become a state. It did not. Self-determination is not synonymous with secession, and Pretoria’s own 2023 pleading made the right broader than that. It described self-determination as the capacity of a people to determine its political status, choose its government, govern itself without interference, and pursue its economic, social and cultural development.[4]
That is precisely why the unintended consequence is so large. The vocabulary is portable. A people demanding autonomy can use it. A people demanding meaningful federalism can use it. A population claiming that it never consented to the political unit in which it was enclosed can use it. A movement asking for independence can use it too. None receives an automatic victory. All receive the same preliminary question: what legal test decides whether the right is engaged, who holds it, and what counts as its satisfaction?
Across Africa, that question collides with the continent’s inherited-border settlement. South Africa itself supplied the adverse authority. In paragraph 75 of its Chagos statement, Pretoria argued that, regardless of pre-colonial boundaries, the boundaries existing at decolonization should remain. Paragraph 76 recognized an exception where states agree otherwise.[5]
That sounds like an exit. Then paragraph 60 comes back into the room. If inherited borders ordinarily survive decolonization, but decolonization cannot be realized without self-determination, the legal work is not finished by saying “territorial integrity.” Someone still has to identify the relevant people, the relevant territorial unit, and the act by which the right was exercised or satisfied.
That tension matters far beyond one African movement. Wherever a state relies on an inherited frontier to answer a claim of peoplehood, Pretoria’s own pleadings invite a second question: whose self-determination made that frontier the legitimate unit? The answer may be obvious in some cases and fiercely disputed in others. But the question is no longer frivolous under South Africa’s own theory.
Pretoria also wrote the doctrine at home
South Africa cannot easily dismiss community self-determination as a dangerous foreign import. Section 235 of its own Constitution says that the self-determination of the South African people as a whole does not preclude recognition of the notion of self-determination for a community sharing a common cultural and linguistic heritage, including within a territorial entity. The same chapter of the Constitution makes customary international law part of South African law unless inconsistent with the Constitution or legislation, and directs courts interpreting legislation to prefer reasonable interpretations consistent with international law.[6]
On August 12, Mthwakazi Republic Party President Mqondisi Moyo transmitted a further letter to official addresses at South Africa’s Department of International Relations and Cooperation and the Presidency, while simultaneously sending it to official addresses at the African Union and the SADC Secretariat. The letter does not ask South Africa to recognize Mthwakazi. It asks Pretoria to identify the test that reconciles its own positions on Palestine, Chagos, Western Sahara and Somaliland, and to apply that test to the Matabele nation. Its hardest question is simple: by what act does South Africa say the Matabele nation exercised or satisfied the right Pretoria itself has described as inalienable and peremptory?[7]
That letter is useful not because it proves Mthwakazi’s case. It does not. Its force lies in something more disciplined: the citations belong to Pretoria. Article 20 is the authority South Africa carried to The Hague. Jus cogens is South Africa’s characterization. The proposition that decolonization cannot be realized without self-determination is South Africa’s sentence. Moyo changes the geography and asks for the rule.
There are exits. None is free.
Pretoria can stand by the universal language of its pleadings. If it does, it must explain the test by which the same right is identified and satisfied elsewhere.
It can say the doctrine applies only in classic decolonization cases. Then it must identify what makes a case “classic,” which territorial unit counts, and why the answer differs among Chagos, Western Sahara, Somaliland and other contested inheritances.
It can say territorial integrity ends the discussion. But its Chagos pleading says territorial integrity and self-determination go hand in hand, not that one simply erases the other.
It can say such disputes are too political, domestic or contentious for legal treatment. Its own Chagos conclusion says that, in the advisory proceeding before the Court, those characteristics did not prevent the Court from exercising its advisory jurisdiction.
It can insist that the 2023 arguments were merely case-specific advocacy for Palestine. That answer runs into Pretoria’s own choice of words: “all peoples in the world,” an erga omnes character, and a collective legal interest belonging to all states.
Or South Africa can retreat from those propositions. Governments are allowed to change legal positions. But retreat would have a price. Every qualification written now to contain the doctrine in Africa would sit beside the unqualified language Pretoria used when it wanted the doctrine applied to Israel.[8]
That is the trap South Africa built for itself. Not a mechanical rule that produces dozens of new states. Not a judicial order compelling Pretoria to endorse every claimant. A consistency problem. A burden of explanation. A reusable cross-examination.
Universal principles travel
The worldwide consequence is easy to understate because the immediate dispute is African. It is not confined there. Pretoria’s 2023 pleading did not say “all colonized peoples in Africa.” It said “all peoples in the world.” It did not say that only South Africa may care. It said all states have a collective legal interest in realization and protection of the right.
That language can be quoted in Europe, Asia, the Americas and the Pacific wherever a distinct people argues over political status, meaningful internal autonomy, historic incorporation, resource control or external self-determination. Most such claims will still fail. International law contains powerful counter-principles, including territorial integrity and uti possidetis. South Africa itself invoked both.
But Pretoria has helped make a one-word dismissal harder. Under its own account, self-determination is a legally enforceable right; Article 20 strengthens it; the right is peremptory; all states have a legal interest in it; and political or domestic complexity does not, in the advisory setting it addressed, make the legal question disappear. Once those propositions are placed together, “territorial integrity” is an argument that must be explained, not a spell that ends the conversation.
South Africa went to The Hague because it wanted international law taken seriously when Israel was the object of scrutiny. The law of unintended consequences is that universal language does not remain attached to the defendant named on the cover sheet.
Pretoria may yet produce a coherent limiting principle. It may explain why its words lead to one outcome in Palestine, another in Chagos, another in Western Sahara, another in Somaliland, and still another in Matabeleland. If it can, it should state the test.
If it cannot, the problem is much larger than one letter from Bulawayo. South Africa has given the rest of the world a vocabulary for asking questions it did not intend to answer.
Pretoria asked for universal law. The rest of the world is entitled to take it at its word.
***
[1] International Court of Justice, Written Statement of the Government of the Republic of South Africa, Legal Consequences arising from the Policies and Practices of Israel in the Occupied Palestinian Territory, including East Jerusalem, document 186-20230725-WRI-14-00-EN, 25 July 2023, paras. 9 and 51. Paragraph 9 describes self-determination as “a right of all peoples in the world”; paragraph 51 characterizes the right as peremptory or jus cogens, with an erga omnes character, and states that all States have a collective legal interest in its realization and protection. The filed pleading contains the typographical form “erga omes”; the article paraphrases rather than reproduces that typo. https://www.icj-cij.org/node/203596
[2] International Court of Justice, Written Statement of the Government of the Republic of South Africa, Legal Consequences of the Separation of the Chagos Archipelago from Mauritius in 1965, document 169-20180301-WRI-12-00-EN, 1 March 2018, paras. 6 and 60. Paragraph 6 describes self-determination as a fundamental human right and a jus cogens right; paragraph 60 states that decolonization cannot be realized without self-determination. https://www.icj-cij.org/node/105675
[3] South Africa, Chagos written statement, paras. 64-65 and 55. Paragraph 64 says self-determination goes “hand in hand” with territorial integrity; paragraph 65 addresses realization of self-determination “both internally and externally”; paragraph 55 states that political implications, domestic matters or contentious issues do not, in South Africa’s submission, prevent the Court from exercising its jurisdiction in the advisory proceeding. https://www.icj-cij.org/node/105675
[4] South Africa, Palestine written statement, para. 47, describing self-determination as including the capacity of a people to determine its political status, choose its government, govern itself without interference, and pursue its economic, social and cultural development and natural wealth and resources. https://www.icj-cij.org/node/203596
[5] South Africa, Chagos written statement, paras. 75-76. Paragraph 75 argues that, regardless of where boundaries existed before colonization, boundaries at decolonization should remain as they were; paragraph 76 notes an exception where the States concerned agree otherwise. https://www.icj-cij.org/node/105675
[6] Constitution of the Republic of South Africa, 1996, ss. 232, 233 and 235. Section 235 addresses the notion of self-determination for a community sharing a common cultural and linguistic heritage; ss. 232-233 address customary international law and interpretation consistent with international law. https://www.justice.gov.za/legislation/constitution/chp14.html
[7] Mqondisi Moyo, President, Mthwakazi Republic Party, letter to President Cyril Ramaphosa and Minister Ronald Lamola, “South Africa’s Own Pleadings Before the International Court of Justice, and Their Application in Southern Africa,” 12 August 2026. The email transmission record, copied to the author, shows transmission on 12 August 2026 to official addresses within South Africa’s Department of International Relations and Cooperation and the Presidency, and simultaneously to official addresses at the African Union and the SADC Secretariat. Public copy: https://static-cdn.toi-media.com/blogs/uploads/2026/08/MRP_Moyo_Letter_Ramaphosa_Lamola_ICJ_Pleadings_2026-08-12.pdf. See also Mthwakazi Republic Party, Written Questions on the Doctrine of Inherited Borders, 10 August 2026: https://static-cdn.toi-media.com/blogs/uploads/2026/08/MRP_Written_Questions_AU_SADC_Pretoria_2026-08-10_LETTERHEAD.pdf
[8] South Africa, Chagos written statement, paras. 64 and 55; South Africa, Palestine written statement, paras. 9 and 51. Chagos paragraph 64 states that self-determination goes “hand in hand” with territorial integrity; paragraph 55 addresses the Court’s advisory jurisdiction despite political implications, domestic matters or contentious issues. Palestine paragraphs 9 and 51 use universal language, including “all peoples in the world,” and state that all States have a collective legal interest in realization and protection of the right. https://www.icj-cij.org/node/105675 ; https://www.icj-cij.org/node/203596
