Publications include ‘How the East was won in the reign of Basil II’, in A. Eastmond (ed.), Eastern Approaches to Byzantium (2001); ‘The Byzantine eastern frontier in the tenth and eleventh centuries’ in D.Abulafia & N. Berend (eds), Medieval Frontiers: Concepts and Practices (2002); ‘Political elites in the reign of Basil II’ in P. Magdalino (ed.), Byzantium in the Year 1000 (2003); ‘The rhetorical structures of John Skylitzes’s Synopsis Historion’ in E.Jeffreys (ed.), Rhetoric in Byzantium (2003); Basil II and the Governance of Empire (2005); ‘Constantinople in the reign of Basil II’ in E. Jeffreys (ed.), Byzantine Style, Religion and Civilization: in Honour of Sir Steven Runciman. (2006); and ‘Treaties between Byzantium and the Islamic world’, in P. de Souza & J. France (eds), War and Peace in Ancient & Medieval History (2008); ‘Provinces and Capital’, in L. James (ed.), A Companion to Byzantium (2010); ‘Political Literacy’, in p. Stephenson (ed.), The Byzantine World (2010).

Research interests centre on Byzantium and the political, military and cultural history of the Mediterranean and Aegean.