I am currently working on five projects:

a) The Violence of War
Published works include Absolute War: Violence and Mass Warfare in the German Lands, 1792-1820 (OUP, 2017), The People's Wars: Histories of Violence in the German Lands, 1820-1888 (OUP, 2017), Combatants, Civilians and Cultures of Violence (a special issue of History, 2016) and Making Sense of Military Violence (a special issue of Cultural History, 2017, co-edited with Matthew D'Auria).

b) Birth of a Nation: Germany, 1848-1888
I have published one volume of this project to date: Nationalism in Germany, 1848-1866: Revolutionary Nation (Palgrave Macmillan, 2010).

c) Nationalism, Globalization and Europeanism
Publications include Germany and the Modern World, 1880-1914 (CUP, 2018), Europe in Crisis: Intellectuals and the European Idea, 1917-1957 (Berghahn, 2012), co-edited with Matthew D'Auria, and What is a Nation? Europe, 1789-1914 (OUP, 2006), co-edited with Timothy Baycroft.

d) International Relations and the Outbreak of the First World War
Publications: Germany and the Causes of the First World War (Bloomsbury, 2004) and 'Germany and France before the First World War: A Reassessment of Wilhelmine Foreign Policy', English Historical Review, 115 (2000).

e) Historical Theory
Publications: History and Causality (Palgrave Macmillan, 2014) and, with E. Akyeampong, C. Arni, P. K. Crossley and W. H. Sewell, 'Explaining Historical Change; or, The Lost History of Causes', American Historical Review, 120 (2015).