Burmese-Thai relations have been shaped by a long and complex history, marked by periods of cooperation, conflict, and political maneuvering.

Both nations have shared cultural, religious, and geopolitical interests, yet their interactions have often been characterized by rivalry and territorial disputes.

The notion of Thailand as an independent nation-state that resisted foreign domination resonates strongly in Thai nationalism, positioning Burma as a historical aggressor in this narrative.

Historic conflicts between Siamese and Burmese kingdoms and the Fall of Ayutthaya in 1767 have contributed to this prevailing view in Thai discourse.

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 thrones The war is notable for the introduction of early modern warfare by Portuguese mercenaries.

The casus belli of this war were also the control of the Tenasserim coast and its trade, and the Siamese support for the rebels in the Burmese border regions.

But King Hsinbyushin of Burma believed that the Chinese war was a minor border dispute, and decided to continue the siege.

On 7 April 1767, the Burmese sacked the starving city for the second time in history, committing atrocities that have left a major black mark on Burmese-Thai relations to the present day.

Burma had annexed the lower Tenasserim coast but again failed to eliminate Siam as the sponsor of rebellions in her eastern and southern borderlands.

The armies surged into Lan Na and Northern Siam, yet the governor of Lampang managed to partly halt the Burmese, waiting for the troops from Bangkok.

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.

Recently, Prime Minister Abhisit Vejjajiva made clear that dialogue encouraging political change is a priority for Thailand, but not through economic sanctions.

[11] However, there were tensions over detained opposition leader Aung San Suu Kyi, with Thailand calling for her release.

[16] In 2018, Senior General Min Aung Hlaing received the Knight Grand Cross First Class of the Most Exalted Order of the White Elephant, after being nominated by King Maha Vajiralongkorn.

[19][20][21][22] The Thai government, led by a former General himself, is accused of helping the Tatmadaw to maintain power in Myanmar, which was denied.

[27][28] In 30 June 2022, when the Myanmar Air Force allegedly violated Thai airspace, Thailand scrambled a defense attache.

"[29] After the 2023 Thai general election, the new Prime Minister Srettha Thavisin has shown support for the military's Nationwide Ceasefire Agreement urging all parties in Myanmar to stay on the path for peace and stability.