Rumen Radev became Bulgaria's fifth democratically elected president when he was sworn in for a five-year term in January 2017.
A former air force commander, Mr Radev is a relative newcomer to politics who ran as an independent candidate with the backing of the opposition Socialists.
His victory in the presidential election led to the resignation of Prime Minister Boyko Borisov and raised the prospect of early parliamentary elections.
Mr Radev has pledged to maintain Bulgaria's position as a member of the European Union and NATO while also improving historically important ties with Russia.
In his inauguration speech, Mr Radev highlighted the need for continuity and pledged to work for a "united society in the name of democracy".
Boyko Borisov became prime minister for the third time in May 2017 following the victory of his GERB party in the April snap parliamentary election.
