Historical Treaties of Southeast Asia

A research program in global diplomatic history

Historical Treaties of Southeast Asia is a collaborative research program in Global Diplomatic History financed by the Swedish Research Council and running from 2022 until the end of 2027.

A team of seven researchers based in Europe and Southeast Asia investigate the role of treaties and treaty-making in the imperial expansion and colonisation of Southeast Asia from the eighteenth to the early and twentieth century.

The researchers systematically analyse all bilateral treaties concluded between a European, American or Japanese imperial power and a Southeast Asian polity between the eighteenth and early twentieth century. In addition, a selected number of diplomatic treaty-making processes are studied in detail. In doing so, the project aims to bring about a new and more nuanced understanding modern imperialism of relevance not only to Southeast Asia but globally.

 

Public lecture: Coercion and accommodation in the Malay World during the long nineteenth century

thumb_treaty of Laubaun
Category
Events
Dates
2026-03-25 17:30 - 19:00
Venue
SOAS Gallery, room B103

This guest lecture presents recent findings from the research programme Historical Treaties of Southeast Asia, which examines treaty-making and cross-cultural diplomacy between indigenous Southeast Asian polities and European colonial powers from the mid-eighteenth to the early twentieth century.

Focusing particularly on the Malay World during the long nineteenth century, the lecture explores how treaties functioned not merely as instruments of imperial domination, but also as arenas of negotiation, accommodation, and strategic agency. By analysing diplomatic encounters across different regional contexts, the speakers highlight the complex interplay between coercion and local political practice.

treaty of Laubaun

Image: Conclusion of the so-called Treaty of Laubuan between Brunei and the United Kingdom, 18 December 1846. From R. Mundy, Narrative of Events in Borneo and Celebes, Vol. II (London: John Murray 1848), face p. 295. https://commons.wikimedia.org/wiki/File:Treaty_of_Labuan1846.jpg.

The lecture consists of four short presentations by members of the project, followed by comments from Dr Mulaika Hijjas (SOAS):

· Prof. Stefan Amirell, Linnaeus University: ’Unequal treaties’ and historical agency: A view from eighteenth-century Kedah

· Dr. Maarten Manse, Linnaeus University: Recasting the terms of empire: Treaty-making in Java in the seventeenth to nineteenth centuries

· Assoc. prof. Birgit Tremml-Werner, Stockholm University: Coercion and accommodation in treaty making practices viewed from Zamboanga

· Dr. Ariel Lopez, University of the Philippines: New Alliances, Old System: Chiefly negotiations along the margins of the Sulu Sultanate and the Spanish colonial empire, c. 1870−1890

 

The event is free, open to the public, and held in person only.

For more information, see:
https://www.soas.ac.uk/about/event/historical-treaties-southeast-asia-coercion-and-accommodation-malay-world-during-long

 

 
 

All Dates

  • 2026-03-25 17:30 - 19:00

Project Member Ariel Lopez Featured in New Historical Documentary

Project member Ariel Lopez appears in a new documentary

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Treaties and Origins of the Cambodia-Thailand Border Dispute

Ever since Cambodia became independent in 1953, its border with Thailand has been contested, the ancient Hindu temple Preah Vihear (or Phra Wihan in Thai) being a particular source of discord. To understand the present conflict, it is necessary to look at two treaties concluded in 1904 and 1907.

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06
May
Malmö University, Niagara och Orkanen
Global diplomacy, treaties & new perspectives. Malmö, May 2026. Linnaeus & Lund universities.

01
Sep
Project members convene Southeast Asia diplomacy panel at EuroSEAS Madrid, Sept 2026

01
Sep
CFP Deadline: Treaties & Tributes 2027 conference. Submit to 2027conference@sea-treaties.org

19
Feb
Thammasat University, Bangkok
International conference on Asian diplomacy, treaty-making & cross-cultural relations. Bangkok, 2027

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