He has authored and co-authored more than thirty books and papers on modern German, European and international history,[3] including works in English published by Cambridge University Press.[4] His interviews and writing have appeared in German news magazine Der Spiegel.[2][5]
His book The Search for Security (German: Die Suche nach Sicherheit)[6] garnered him the prize for promoting the translation of humanities works by the Börsenverein des Deutschen Buchhandels in 2009.[7]
He was a member of the Independent Commission of Historians, tasked by the German Federal Foreign Office in 2005 to study the conduct of German diplomats in Nazi Germany and in the Federal Republic.[2][8] The commission published its findings on October 21, 2010, in a book entitled The Office and the Past (German: Das Amt und die Vergangenheit).[9]
He is the deputy chairperson of the board of trustees of the Wolf-Erich-Kellner Memorial Foundation, commemorating its namesake German historian, archivist, and FDP politician.[10]
Die gaullistische Herausforderung. Die deutsch-französischen Beziehungen in der amerikanischen Europapolitik [The Gaullistic Challenge: German-Franco Relations in American-European Policy] (in German). Munich: University of Erlangen–Nuremberg. 1995. ISBN3-486-56106-5.
Von deutschem Adel. Die Grafen von Bernstorff im zwanzigsten Jahrhundert [From German Nobility: The Counts of Bernstorff in the Twentieth Century] (in German). Stuttgart: Deutsche Verlags-Anstalt. 2000. ISBN3-421-05344-8.
Die Suche nach Sicherheit. Eine Geschichte der Bundesrepublik von 1949 bis in die Gegenwart [The Search for Security: A History of the Federal Republic From 1949 to the Present] (in German). Munich: Siedler. 2009. ISBN978-3-88680-919-6.
Geschichte der Sicherheit. Entwicklung – Themen – Perspektiven [History of Security. Development – Themes – Perspectives.] (in German). Göttingen: Vandenhoeck & Ruprecht. 2017. ISBN978-3-525-30094-7.
Die große Illusion. Versailles 1919 und die Neuordnung der Welt [The Great Illusion. Versailles 1919 and the Reorganisation of the World] (in German). Munich: Siedler. 2018. ISBN978-3-8275-0055-7.
^Die Suche nach Sicherheit. Eine Geschichte der Bundesrepublik von 1949 bis in die Gegenwart [The Search for Security: A History of the Federal Republic From 1949 to the Present] (in German). Siedler. 2009. ISBN978-3-88680-919-6.
^Conze, Eckart; Frei, Norbert; Hayes, Peter; Zimmermann, Moshe (October 21, 2010). Das Amt und die Vergangenheit. Deutsche Diplomaten im Dritten Reich und in der Bundesrepublik [The Office and the Past. German Diplomaits in the Third Reich and the Federal Republic] (in German). Munich.{{cite book}}: CS1 maint: location missing publisher (link)
