Thai Legal Studies (2025) Vol. 5 No. 2 | 211–212
https:/doi.org/10.54157/tls.284666
© 2025 by William Roth

This is an open access article, distributed under the terms of the Creative Commons Attribution License (CC BY 4.0, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

Addendum to Exhibit C in
William Roth, “The 2001 MoU Between Thailand and Cambodia: Demystifying the Koh Kut Kerfuffle”
Thai Legal Studies, vol. 4, no. 2, December 2024, pp. 225–250 https://doi.org/10.54157/tls.277868

Note by the author: Exhibit C showed the map that was attached to the Franco–Siamese Treaty of 23 March 1907. It contained a solid line beginning offshore east of Koh Kut that extended to the mainland. However, a different and undated map, prepared by the Geographic Service of the French Ministry of Foreign Affairs (shown below), was discovered by the author on 21 October 2025 at the Archives of the Ministry of Foreign Affairs, France. The map displayed both the boundary line according to the Convention of 1904 (in green) and that of the boundary line in accordance with the Treaty of 1907 (in red). But, as shown in the enlarged portion further below, it also vividly depicted a dotted line running east from the top of a mountain on Koh Kut to the mainland. This is consistent with Clause I of the treaty’s Protocol providing that “The border between French Indo-China and Siam starts from the sea at a point located opposite the highest peak of the island of Koh-Kut.”

A photograph of the entire map can be found online at:

<https://www.dropbox.com/scl/fi/abj5kdclzhvvbz2mz3xzm/Boundary-Lines-of-1904-and-1907.JPG?rlkey=qr7tujolaxwqa1nvn0yauqzfa&st=6ebk4z7h&dl=0>.