…weakens the Seljuq sultanate of Rum in east central Anatolia.
The sultanate’s contemporaries consider it “Turkey”, although its population includes Christians, Armenians, Greeks, Syrians, and Iranian Muslims.
Commerce, agriculture, and art thrive in the kingdom, where a tolerance of races and religions has contributed to order and stability.
However, a war against the Khwarezm-Shah dynasty of Iran instigated in 1230 by Rüm’s sultan 'Ala' ad-Din Kay-Qubadh (Kaikobad) I leads ultimately to the disintegration of Rüm and of Seljuq power.
The loss of the Khorezmian buffer state means that when the invading Mongols reach Turkey's eastern frontiers, the Seljuqs cannot fend them off.
During the reign of Ögedei, the Seljuqs of Anatolia had offered friendship and a modest tribute to Chormaqan.
Under Kaykhusraw II, however, the Mongols began to pressure the Sultan to go to Mongolia in person, give hostages, and accept a Mongol darugachi.