The Impact of Diplomacy on Post-Colonial State Formation in Southeast Asia

Thesis Abstract

This study investigates the pivotal role of diplomatic practices and policies in shaping the formation and consolidation of post-colonial states in Southeast Asia, a region characterized by nuanced diplomatic engagements during the critical period of independence movements and state-building efforts from the 1940s to the 1970s. The research addresses the gap in comprehensive empirical analyses that explicitly connect diplomatic interactions—bilateral negotiations, multilateral engagements, and international recognition processes—with internal state stability and territorial sovereignty in post-colonial Southeast Asian countries. The primary aim is to evaluate how diplomatic strategies influenced state legitimacy, borders, and sovereignty, with specific objectives to analyze the role of international diplomacy in boundary negotiations, examine diplomatic recognition's effect on state stability, and assess the influence of foreign aid diplomacy on post-independence nation-building. Employing a mixed-methods research design, the study integrates both qualitative and quantitative approaches, providing a holistic understanding of the diplomatic factors involved. The qualitative component encompasses thematic analysis of archival diplomatic correspondence, treaties, and official government statements from Cambodia, Indonesia, Malaysia, Myanmar, and the Philippines, covering the period from 1945 to 1975. Quantitative data are derived from coding diplomatic engagement frequency, recognition timelines, and foreign aid flows obtained from government archives, international organizations, and diplomatic records. The study population includes diplomatic transcripts, international recognition documents, and foreign aid agreements, with a purposive sample of 150 diplomatic documents complemented by interviews with 20 former diplomats and foreign policy analysts. Data analysis employs thematic content analysis for qualitative data and multiple regression analysis to assess the statistical significance of diplomatic variables on state stability indicators such as territorial integrity and government legitimacy. Expected findings suggest that proactive diplomatic engagement—particularly bilateral recognition and boundary negotiations—correlates positively with state legitimacy and stability in post-colonial Southeast Asian countries. The study hypothesizes that regions with more diplomatic recognition and strategic diplomatic ties experienced fewer internal conflicts and territorial disputes. Furthermore, foreign aid diplomacy and international engagement strategies contributed significantly to state-building efforts, especially in states facing colonial state institutional legacies. These findings are anticipated to demonstrate that diplomatic practices serve as critical mechanisms for establishing sovereign authority, gaining international legitimacy, and fostering internal stability during the formative years of statehood in Southeast Asia. This research contributes to international relations and post-colonial studies by providing an empirically grounded understanding of how diplomatic processes directly impact state formation outcomes in a complex regional context. It expands existing literature beyond normative and theoretical discussions by offering substantive, case-based evidence linking diplomatic history with tangible post-independence state attributes. Theoretically, the study draws upon the recognition theory of sovereignty and the constructivist perspective on diplomatic identity, integrating them within a framework that emphasizes the strategic use of diplomacy as a tool for state consolidation. The main conclusion underscores the importance of diplomatic agency in shaping post-colonial Southeast Asian states and advocates that diplomatic recognition and strategic diplomatic engagement should be prioritized in contemporary state-building agendas. Policy recommendations arising from the study include establishing more proactive diplomatic recognition policies and enhancing diplomatic capacity to foster stability and sovereignty in emerging states. The study also suggests avenues for future research, particularly longitudinal studies of diplomatic trajectories beyond 1975 and comparative analyses with other post-colonial regions, to further elucidate the enduring impacts of diplomatic strategy on state sovereignty and internal stability.