The Turks regathered strength & retook Gangra

Summary:
Gangra was not fated to remain long in Byzantine hands. While Ioannes II was busy with even more important affairs, the local Turks gathered their forces and starved the city into submission 
Dates:
1138 (Uncertain) 
Emperor Ioannes II Komnenos (Ioannes 2)
  • Gangra was not fated to remain long in Byzantine hands; when Ioannes 2 was engrossed in even more important events, the local Turks gathered their forces and starved the city into submission (:) Niketas Choniates, Historia 21.49-53