Bosucheonic Wars

The Bosucheonic Wars, also known as the Buyeo-Seleucid Wars, were two conflicts fought from 184 to 196 AD between the Seleucid and the Buyeo Empires. The wars are named after King Bosucheon of Dae Buyeo from his expansions upon Seleucid settlements in the Tian Shan mountains and attacks towards the Western Xiongnu that prompted the Seleucids to designate it as a casus belli. However, the cause has been disputed with an attack on an undeterred Seleucid colonization effort in present-day Xinjiang.

Athenodorus I Anicetus responded to the concerns of Buyeo expansion by designating the task of negotiations with Buyeo onto governors Speusippus and Melicertes.

The First Bosucheonic War commenced with two individual campaigns initiated by Speusippus and Melicertes that started out from Talas and Alexandria Eschate, respectively. The Second Bosucheonic War was instigated by Seleucus XII Nicephorus as a punitive expedition into the Buyeo heartland. The latter would become the longest of the wars, lasting for 10 years.