In August 1943 Tsar Boris died suddenly after returning from Germany (possibly assassinated, although this has never been proved) and was succeeded by his six-year-old son Simeon II.
Augustis 1943 suri tsaar Boris äkitselt pärast naasmist Saksamaalt (võib-olla mõrvati, kuid seda ei ole kunagi tõestatud) ja tema järglaseks sai kuueaastane poeg Simeon II.