During the early 1320s, tensions between Bulgaria and the Byzantines rose as the latter descended into a civil war and the new emperor George II Terter seized Philippopolis.
1320. aastate alguses kasvasid pinged Bulgaaria ja bütsantslaste vahel, kui viimased laskusid kodusõtta ja uus tsaar Georgi II Terter hõivas Philippopolise.