Burma – Thailand relations Burma – Thailand relations refers to the current and historical relations between Burma and Thailand . Burma has an embassy in Bangkok . Thailand has an embassy in Rangoon . Relations between Burma and Thailand focus mainly on economic issues and trade . There is sporadic conflict with Thailand over the alignment of the border . Military history . Burmese – Siamese War of 1548 - 49 . The Burmese – Siamese war of 1548 was the first of many wars fought between the Burmese of Pegu and the Siamese of Ayutthaya . The war began with an invasion by King Tabinshwehti of the Taungoo Dynasty through the Three Pagodas Pass into Siamese territory , which presaged an attack on the capital city of Ayutthaya itself . The invasion came after a political crisis in Ayutthaya that had ended with the placing of Maha Chakkraphat on the Siamese throne . The war is notable for the introduction of early modern warfare by Portuguese mercenaries . It is most notable in the history of Thailand for the valiant death in battle of Siamese Queen Suriyothai on her war elephant . As a result the conflict is often referred to in Thailand as the War that led to the loss of Queen Suriyothai . Burmese – Siamese War ( 1594 – 1605 ) . The Burmese – Siamese War ( 1594 – 1605 ) was the war caused by the vengeance of Siam towards the Burmese rule . The King Naresuan of Ayutthaya Kingdom was planning to requiring conquer Burma , The war began on Siamese attacks and occupied city of Mergui , Tenasserium coast to Toungoo . Sino - Burmese War ( 1765 – 1769 ) . The Sino – Burmese War ( 1765 – 1769 ) was a war fought between the Qing Dynasty of China and the Konbaung Dynasty of Burma . China under the Qianlong Emperor launched four invasions of Burma between 1765 and 1769 , which were considered as one of his Ten Great Campaigns . At first , Qianlong envisaged an easy war , and sent in only the Green Standard troops stationed in Yunnan . The Qing invasion came as the majority of Burmese forces were deployed in the Burmese invasion of Siam . Nonetheless , battle - hardened Burmese troops defeated the first two invasions of 1765 and 1766 at the border . The regional conflict now escalated to a major war that involved military maneuvers nationwide in both countries . The third invasion ( 1767 – 1768 ) led by the elite Manchu Bannermen nearly succeeded , penetrating deep into central Burma within a few days ' march from the capital , Ava . But the Bannermen of northern China could not cope with unfamiliar tropical terrains and lethal endemic diseases , and were driven back with heavy losses . After the close - call , King Hsinbyushin redeployed most of the Burmese armies from Siam to the Chinese border . The fourth and largest invasion got bogged down at the frontier . With the Qing forces completely encircled , a truce was reached between the field commanders of the two sides in December 1769 . The Burmese - Siamese War ( 1785 – 1786 ) . Bodawpaya of Burma pursued his ambitious campaigns to expand his dominions . The Burmese - Siamese War ( 1785 – 1786 ) was called “ Nine Armies War ” by Siam because the Burmese came in nine armies . The armies surged into Lanna and Northern Siam , yet the governor of Lampang managed to partly halt the Burmese , waiting for the troops from Bangkok . As Phitsanulok was captured , Rama I himself led an army to the north . In the south , Bodawpaya was waiting at Chedi Sam Ong . The Front Palace led his troops to the south the counter - attacked the Burmese came from Ranong through Nakhon Si Thammarat and the engagements occurred at Kanchanaburi . The Burmese also attacked Thalang ( Phuket ) , where to governor had just died . Chan , wife of the governor , and her sister Mook gathered people to defend Thalang against the Burmese . Today , Chan and Mook are revered as two heroines opposing the Burmese invasions . The Burmese proceeded to capture Songkhla . Upon hearing the news , the governors of Phatthalung fled . However , a monk named Phra Maha encouraged the citizens to turn up their arms against the Burmese . Phra Maha was later raised to nobility by Rama I . As his armies were destroyed , Bodawpaya retreated , only to renew attacks the next year ( 1786 ) . Bodawpaya , this time , didn ’ t divide his troops but instead formed into single army . Bodawpaya passed through the Chedi Sam Ong and settled in Ta Din Dang . The Front Palace marched the Siamese forces to face Bodawpaya . The fighting was very short and Bodawpaya was quickly defeated . This short war was called “ Ta Din Dang campaign ” . 20th century relations . World War II . In 1941 , Thailand sent Phayap Army to occupy the Shan State and Kayah State of Burma . the principal objective of the army commander was to procure opium . Diplomatic relations were established in 1948 . Both countries are members of the ASEAN . 21st century relations . Recently , Prime Minister Abhisit Vejjajiva made clear that dialogue encouraging political change is a priority for Thailand , but not through economic sanctions . He also made clear to reconstruct temples damaged in the aftermath of Cyclone Nargis . However , there were tensions over detained opposition leader Aung San Suu Kyi , with Thailand calling for her release . She was released in 2010 . 2010 Burma Border clashes . The 2010 Burma Border clashes were a series of ongoing skirmishes between the Myanmar Armed Forces ( Tatmadaw ) and splinter brigades of the Democratic Karen Buddhist Army ( DKBA ) . The clashes erupted along the border with Thailand shortly after the general election on 7 November 2010 . An estimated 10 , 000 refugees have fled into nearby neighbouring Thailand to escape the violent conflict . There is concern that due to discontent with the elections , and speculations of electoral fraud , that the conflict could escalate into a civil war . Political history . Present political relations . In the Thaksin Shinawatra administration , relations have been characterized by conflicts and confrontations . Border disputes are now coming more prominent and Thailand as disturbed by the imprisonment of Burma ’ s dissident Aung San Suu Kyi .