The 1926 settlement confirmed the Iraq–Turkey frontier, provided a Turkish share of specified oil royalties and regulated frontier cooperation. League records also document Kurdish administrative and language safeguards, and complaints about their implementation.
Who signed, and when
Britain, Iraq and Turkey signed at Angora, now Ankara, on 5 June 1926. Their representatives were Ronald Lindsay, Nuri al-Said and Tevfik Rüştü. Ratifications were exchanged on 18 June. [1] There was no separate Kurdish signatory. That identifies the treaty’s parties; it does not mean that no Kurdish person expressed an opinion during the wider Mosul dispute.
The League process behind the settlement
The frontier question had survived the Lausanne negotiations. The UN’s historical account of the Permanent Court of International Justice explains the sequence: the League Council adopted a provisional line at Brussels on 29 October 1924; its decision of 16 December 1925 made that line the basis of a definitive frontier, subject to arrangements concerning the British–Iraqi relationship. A new Anglo-Iraqi treaty followed in January 1926, and the Council confirmed the decision in March. The June treaty then accepted the line with a small modification. [2] The settlement was therefore the outcome of negotiations, an inquiry and League decisions over several years, rather than a boundary invented at a single signing ceremony.
What the boundary provisions did
Articles 1–3 adopted the Brussels line with a road adjustment near Alamun and Ashuta, and provided for demarcation. Article 5 called the frontier definitive and inviolable. [1] Agreeing a line in a text, marking it on the ground and administering the territory are distinct tasks. The treaty should not be read as a map of every Kurdish community or a vote by those communities on state membership.
Frontier security was cooperation, not a standing invasion clause
Articles 6–13 required prevention of armed raiding, exchange of information, arrests and cooperation in a 75-kilometre zone on each side. Article 12 restricted political contact with the other state’s tribal members and hostile propaganda. Article 17 set a ten-year term for this chapter, with a termination mechanism. [1] These are specific obligations for frontier authorities. They do not state a general right for Turkey to send its army across the border whenever it considers the area unstable. Claims about the legal basis of later operations require separate evidence about the relevant time and instruments.
Oil: a share of royalties, not ten percent of every sale
Article 14 assigned Turkey ten percent of specified royalties received by Iraq for twenty-five years. An accompanying note offered a £500,000 capitalisation option within twelve months. [1] In Parliament on 9 June 1926, the government explained that the concession area extended beyond Mosul, covering Iraq except Basra vilayet and certain territories transferred from Persia in 1914. [3] The distinction between royalties, production and total oil revenue matters: these are different financial bases. The treaty and note establish the agreed mechanism, not proof that every later payment was made on schedule or that the capitalisation option was exercised. Parliamentary questions on 7 June also challenged the government about oil and Christian minorities, showing that the relationship between strategic interests and protection was debated at the time. [4]
Kurdish safeguards and the question of implementation
The relevant safeguards cannot be assessed from the frontier treaty alone. In a report reproduced in the Permanent Mandates Commission’s 1930 minutes, William Rappard recalled the inquiry’s recommendations for Kurdish officials, justice, teaching and official use of Kurdish. He reviewed a petition from nine Sulaymaniyah notables and the mandatory power’s response, which acknowledged that promises had not been fully fulfilled. His report questioned whether proposed measures would provide durable local-administration guarantees after the mandate. It also distinguished these safeguards from the petitioners’ demand for a Kurdish government under League supervision. [5] This record supplies both Kurdish political demands and contemporary criticism of implementation; neither a claim that no safeguards existed nor one that they had all been secured captures it.
Why the distinction matters
The agreement is central to the history of Kurdish communities divided between Iraq and Turkey. Its oil clause deserves scrutiny alongside the frontier-security regime and the League’s administrative commitments. “Sold for oil” expresses a political interpretation; it is not a substitute for explaining the treaty’s financial mechanism or the separate history of Kurdish rights. Reading the documents together makes the central issue clearer: fixing an interstate border did not itself deliver self-government or guarantee that promised language and administrative protections would endure.
Sources and further reading
- League of Nations Treaty Series, vol. 64 (1927), no. 1511, pp. 379–395: treaty, eighteen articles, capitalisation notes and subsequent annex correction.
- United Nations, Summaries of PCIJ Judgments, Advisory Opinions and Orders (2012), frontier case, pp. 76–83; concluding chronology of the 1925–1926 decisions.
- Hansard, Mosul Boundary Treaty, 9 June 1926: official explanation of the royalty concession’s geographical scope.
- Hansard, Mosul Treaty, 7 June 1926: announcement and questions about minorities and oil.
- League of Nations, Permanent Mandates Commission, nineteenth-session minutes (1930), pp. 191–194, report by M. Rappard on a Kurdish petition; National Library of Scotland scan.