The Burmese–Siamese War (1765–1767) was a significant armed conflict in Southeast Asia, primarily fought between the Kingdom of Burma and the Kingdom of Siam. The roots of the war lay in ongoing territorial disputes and ambitions for regional dominance. As both kingdoms aimed to expand their influence, conflict emerged, leading to significant military engagements. Ayutthaya, a crucial city-State in Siam, was the pivotal battleground and faced a lengthy siege by Burmese forces. Despite a series of Burmese victories, the Siamese ultimately regrouped to defend their territory fiercely.

The war drew in numerous military engagements and had implications for surrounding regions. The prolonged conflict, however, led to exhaustion and a realization that continued warfare might yield limited benefits. In light of this, diplomatic negotiations were initiated that culminated in the Treaty of Tambdipara. This treaty officially concluded hostilities and laid the foundations for peace, delineating territorial boundaries that were mutually agreeable, thus affecting the geopolitical landscape of Southeast Asia for years to come.

The conclusion of the conflict allowed both nations to stabilize and recover from the toll of war. It also marked a shift in the dynamics of power in the region, influencing future interactions between various Southeast Asian states. While some territories were returned to Siam, others were retained by Burma, evidencing a shift in territorial control as a result of the negotiations. This event is significant, as it facilitated a period of peace and rebuilding, allowing both kingdoms to refocus their energies on internal development and external relations.