Paul Brannan Senior Analyst, has provided extensive research and analysis on the international nuclear black market at the Institute for Science and International Security. As part of his contribution to ISIS's state-specific proliferation analyses, Brannan analyzes high-resolution commercial satellite imagery to identify and assess potential nuclear weapon-related facilities. His imagery analysis has been used and cited by numerous media sources. He has also provided research assistance for the calculation of global fissile material inventories. Brannan has been with ISIS since 2004 and has co-authored over 20 Issue and Imagery Briefs. He is the co-author of the October 2007 USIP Working Paper: "Disabling DPRK Nuclear Facilities".