Kammala jumlar da ke gaba: A shekara ta 1015, Bulgaria ta shiga cikin
Kusan shekaru talatin na yaƙi da Daular Byzantine, kuma Gavril Radomir ya gaji Sama'ila, wanda ya mutu a ranar 6 ga Oktoba 1014 bayan bala'in yakin Kleidion. Koyaya, tun daga farko matsayin Radomir ba shi da tabbas: Ivan Vladislav, a matsayin ɗan dattijo na 'yan'uwan Cometopouli, na iya da'awar kursiyin bisa ga tsufa. A wannan lokacin Sarkin Byzantium Basil na II ya yi yaƙi zuwa cikin ƙasar Bulgaria. Ya sake dawo da garin Voden (Edessa) da aka rasa a baya kuma ya kewaye babban sansanin Maglen, wanda ke arewa maso yamma. Gavril Radomir ba shi da isasshen ƙarfi kuma bai iya tsoma baki ba kuma yana iya kallon abubuwan da ke faruwa ne kawai daga Lake Ostrovo da ke kusa. Rashin ikonsa na magance barazanar Byzantine ya haifar da rashin jin daɗi a tsakanin masu daraja kuma Ivan Vladislav ya zama jagoran da suka zaɓa. Faduwar Maglen ta rufe makomar Gavril Radomir <unk> a ƙarshen lokacin rani na 1015, yayin da yake farauta kusa da Ostrovo (Arnissa), dan uwansa ya kashe shi, wataƙila bisa umarnin wakilan Byzantine. Bayan haka, Ivan Vladislav ya kwace gadon sarautar Bulgaria kuma ya ɗauki matakai don ya tabbatar da matsayinsa a kan abokan hamayyarsa.