Leadership Home About Us Leadership Key Topics Remarks and Releases Reports Events Careers in IOs Contact Us HomeBureau of International Organization Affairs...Leadership – Bureau of International Organization Affairs hide Leadership – Bureau of International Organization Affairs 6 Items Sison, Michele J. Assistant Secretary Bureau of International Organization Affairs McFarland, David Principal Deputy Assistant Secretary Bureau of International Organization Affairs Cook, Nerissa J. Deputy Assistant Secretary Bureau of International Organization Affairs Grimm, Brian M. Deputy Assistant Secretary Bureau of International Organization Affairs Lipin, Ella Deputy Assistant Secretary Bureau of International Organization Affairs Lombardo, Allison Deputy Assistant Secretary Bureau of International Organization Affairs