As a scholar of nationalism, Roshwald is noted for his belief that nations and nationalism already existed in the ancient world.[2]
Books
The Endurance of Nationalism: Ancient Roots and Modern Dilemmas (Cambridge: Cambridge University Press, 2006).
Ethnic Nationalism and the Fall of Empires: Central Europe, Russia and the Middle East, 1914-1923 (London: Routledge, 2001).
Estranged Bedfellows: Britain and France in the Middle East during the Second World War (New York: Oxford University Press, 1990).
Co-edited with Richard Stites, European Culture in the Great War: The Arts, Entertainment, and Propaganda, 1914-1918 (Cambridge: Cambridge University Press, 1999).