Otte, T. G. (2021) 2016 Revisited: The Trump Presidency in Historical Perspective. H-Diplo/ISSF Forum.
Otte, T. G. (2021) "The Last of the Romans” Herbert Henry Asquith. Finest Hour: Journal of the International Churchill Society (188). pp. 12-21.
Otte, T. G. (2021) Paul W. Schroeder and the nineteenth-century international system, or viewing the world from the windows of the Ballhausplatz. H-Diplo/ISSF Forum (28/2021). pp. 30-35.
Otte, T. G. (2021) The system of odd and even numbers: Lewis Namier the diplomatic historian. Diplomacy and Statecraft, 32 (2). pp. 351-374. ISSN 1557-301X
Otte, T. G. (2021) From Vienna to Ljubljana:The Problems of Peace and Order in Europe in a Historical Perspective. In: The Congress of Ljubljana 1821. Studia Diplomatica Slovenica – Monographiae 5a . Mohorjeva založba, Klagenfurt and Ljubljana, pp. 11-30.
Otte, T. G. (2021) The Waning of the Monarchies:War, Revolution, and Royal Diplomacy. In: Russian International Relations in War and Revolution, 1914–22. Slavica, Bloomington, IN, pp. 265-297. ISBN 978-089357-436-9