Expert on political geography and geopolitics, Russian relations with its neighboring states, Hong Kong-China relations
- Cyberwar and cybersecurity
- Hong Kong-China political relations
- Geographies of nationalism in post-soviet states
- Bordering and the politics of place
- Author, "Russians as the New Minority in the Soviet Successor States."
- Author, "The Geography of Nationalism in Russia and the USSR."
- Leon Epstein Faculty Fellow, UW-Madison
- Director, Center for Russia, East Europe and Central Asia, UW-Madison