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Department of Politics and International Studies (POLIS)



Daniel is a historian of American and British foreign policy and intelligence in the first half of the twentieth century, including an interest in its political, economic, and legal dimensions.


He is focused especially on Anglo-American relations and British war policy in the First World War era, with an emphasis on the role of British intelligence.

His first book, Plotting for Peace (Cambridge University Press, 2021), re-examines American peace diplomacy and the British diplomatic and political response to it during 1914 to 1917, alongside an exploration of British intelligence and the Anglo-American economic relationship.

Dan is especially interested in the role of codebreaking and economics in shaping foreign policy, cultures of secrecy in government, and the history of ideas concerning the conduct of foreign policy.

He previously held a fixed-term University Lectureship in International Relations at POLIS, and a Junior Research Fellowship at Trinity College, Cambridge.

He has MPhil and PhD degrees are from Christ's College, Cambridge, and I completed my BA at the University of Nebraska-Lincoln. I am a co-convenor of the Cambridge Intelligence Seminar.


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Key publications: 


Plotting for Peace: American Peacemakers, British Codebreakers, and Britain at War, 1914-1917 (Cambridge University Press, 2021)



“Before ‘National Security’: The Espionage Act of 1917 and the Concept of ‘National Defense’”, Harvard Law National Security Journal 12/2 (2021), pp. 329-372.

“Creating an American Culture of Secrecy: Cryptography in Wilson-Era Diplomacy”, Diplomatic History 44/1 (2020), pp. 102-132.

“British Signals Intelligence and the 1916 Easter Rising in Ireland”, Intelligence and National Security 33/1 (2018), pp. 48-66.

“British Codebreaking and American Diplomatic Telegrams, 1914-1915”, Intelligence and National Security 32/2 (2017), pp. 256-263.

“Intelligence in the First World War: The State of the Field”, Intelligence and National Security 29/2 (2014), pp. 282-302.

“Abandoning Democracy: Woodrow Wilson and Promoting German Democracy, 1918-1919”, Diplomatic History 37/3 (2013), pp. 476-508.

“War Pessimism in Britain and an American Peace in Early 1916”, International History Review 34/4 (2012), pp. 795-817.

“British Intelligence and the 1916 Mediation Mission of Colonel Edward M. House”, Intelligence and National Security 25/5 (2010), pp. 682-704.


Book Chapter

“A Missing Dimension No Longer: Intelligence Studies, Professor Christopher Andrew, and the University of Cambridge”, in Liam Gearon (ed.), The Routledge International Handbook of Universities, Security and Intelligence Studies (Abingdon: Routledge, 2020), pp. 243-249.


Newspaper Op-Eds

“The U.S.’s Robust Electoral Machinery”, New York Times, 1 November 2020, p. A25.

“How U.S. Foreign Policy from Iran to Ukraine Became Shrouded in Secrecy: The Rise of National Security, and Why It Means a Lack of Accountability”, Washington Post, 7 January 2020.



Assistant Professor of US Foreign Policy
Appointments by email