Al-Muqtafi vs King Wonjong of Goryeo

Upon becoming caliph, Al-Muqtafi began to reassert caliphal authority over Baghdad. He expelled Seljuk officials from the city and appointed his own viziers, marking a reversal of decades of Seljuk domination.

Al-Muqtafi reformed the caliphal army by recruiting new troops and reducing reliance on Seljuk mercenaries. He established a standing army loyal to the caliph, which enabled his military successes.

Al-Muqtafi successfully defended Baghdad against a Seljuk siege led by Sultan Mas'ud. The caliph's forces repelled the attack, solidifying his control over the city and demonstrating the caliphate's renewed military capability.

Al-Muqtafi expanded caliphal territory by conquering several towns in Iraq, including Wasit and Kufa. These conquests restored the caliphate's territorial base and increased its revenue and prestige.

King Wonjong sent his son (future King Chungnyeol) as a hostage to the Mongol court and agreed to Goryeo becoming a vassal state of the Mongol Empire. This ended decades of military resistance and established a tributary relationship that lasted for nearly a century.

After the death of King Gojong, Wonjong returned from the Mongol court where he had been held as a hostage. He was installed as king with Mongol approval, marking the beginning of direct Mongol influence over Goryeo's throne.

King Wonjong ordered the dissolution of the Sambyeolcho, a elite military unit that resisted Mongol domination. The Sambyeolcho rebelled and held out on Jeju Island until 1273, when Mongol-Goryeo forces crushed them, ending organized military opposition to Mongol rule.