sentences:  However, these truces applied only to the Mesopotamian front; in the Caucasus, the war continued.In 575, the Byzantines managed to settle their differences with the Ghassanids; this renewal of their alliance at once bore dramatic fruit as the Ghassanids sacked the Lakhmid capital at Hira.In the same year, Byzantine forces took advantage of the favourable situation in the Caucasus to campaign in Caucasian Albania and secure hostages from the native tribes.