Dennis Deletant is Professor Emeritus at the UCL School of Slavonic and East European Studies and one of the leading historians of Romania’s twentieth-century history. Educated at the University of London, he developed a distinguished academic career at SSEES, where he became Professor of Romanian Studies, and later held appointments at the University of Amsterdam and Georgetown University.

He is widely known for his research on communist Romania, with major works such as Ceaușescu and the Securitate and Romania under Communist Rule, which are regarded as essential for understanding the country’s recent past.

His scholarship has received broad recognition, earning him academic distinctions and state honors in both the United Kingdom and Romania.

Some of his major scholarly works (in English and Romanian) are:

Ceaușescu and the Securitate. Coercion and Dissent in Romania, 1965–1989, Hurst & Co., London, 1995; M.E. Sharpe, New York, 1995 (Ceaușescu și Securitatea, 1965–1989, Humanitas, 1995);

Communist Terror in Romania. Gheorghiu-Dej and the Police State, 1948–1965, Hurst & Co., London, 1999; St Martin’s Press, New York, 1999 (Teroarea comunistă în România. Gheorghiu-Dej și statul polițienesc, 1948–1965, Polirom, 2001);

Hitler’s Forgotten Ally. Ion Antonescu and his Regime, Romania 1940–1944, Palgrave, London, 2006 (Aliatul uitat al lui Hitler. Ion Antonescu și regimul său, 1940–1944, Humanitas, 2006);

British Clandestine Activities in Romania during the Second World War, Palgrave Macmillan, London, 2016 (Activități clandestine britanice în România în timpul celui de-al Doilea Război Mondial, Humanitas, 2016);

Romania under Communism. Paradox and Degeneration, Abingdon, Oxford; Routledge, New York, 2019 (România sub comunism. Paradox și degenerare, Humanitas, 2025);

In Search of Romania, Hurst, London, 2022 (În căutarea României. O aventură personală din ’65 până azi, Humanitas, 2023);

Romania, 1916–1941. A Political History, Abingdon, London; Routledge, New York, 2023 (România. O istorie politică, Humanitas, 2024).