The Sultanate of Rum's capture of Sinope gave it a critical Black Sea port and weakened the Empire of Trebizond by seizing its emperor.
Key Facts
- Date of city surrender
- 1 November 1214
- Attacking force
- Sultanate of Rum under Kaykaus I
- Defending state
- Empire of Trebizond
- Key prisoner taken
- Emperor Alexios I of Trebizond
- Primary chronicler
- Ibn Bibi, near-contemporary Seljuq writer
Location
Cause → Event → Consequence
Sinope was a strategically vital Black Sea port held by the Empire of Trebizond, a Byzantine Greek successor state formed after the Fourth Crusade. The expanding Sultanate of Rum under Kaykaus I sought to control this important coastal city on the Anatolian littoral.
Kaykaus I led the Sultanate of Rum in a siege of Sinope in 1214. The Trapezuntine emperor Alexios I marched an army to relieve the city but was defeated and captured in battle. With its emperor taken prisoner, Sinope surrendered on 1 November 1214.
The Sultanate of Rum gained control of Sinope and its Black Sea harbour, significantly expanding Seljuq power on the coast. The capture of Emperor Alexios I dealt a major blow to the Empire of Trebizond, undermining its military capacity and regional influence in Anatolia.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Kaykaus I.
Side B
1 belligerent
Alexios I of Trebizond.