Addressing Carbon Emissions and Oil Price Volatility. Challenges and Opportunities for Transatlantic Energy Cooperation. Transatlantic Agenda Paper, GPPi and Brookings, February 2012.
Does Imported Oil Threaten U.S. National Security? RAND Research Brief, May 2009
Improving Russian Energy Efficiency: Next Steps. Russian Analytical Digest, (48) 2008, 9-12.
“Energy-NATO” and “Energy-KSZE”. Adäquate Instrumente zur Sicherung der europäischen Energieversorgung?[“Energy-NATO” and “Energy-CSCE”. Adequate Instruments to secure European energy supply?]. SWP Discussion Paper, May 2007, German Institute for International and Security Affairs, Berlin (co-authored with Oliver Geden and Timo Noetzel)
Der GECF-Gipfel in Katar und die Erfolgsaussichten einer “Gas-OPEC” [GECF’s Qatar Summit and the prospects of a “Gas OPEC”], SWP Policy Brief 26/2007, German Institute for International and Security Affairs (SWP), Berlin.
Global Energy Security. The Challenges Ahead and how to Meet Them. MSC Booklet Paper No. 1, Munich Security Conference 2010