#BringBackOurGirls : addressing the threat of Boko Haram : hearing before the Subcommittee on Africa

United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on African Affairs, author.
Washington : U.S. Government Publishing Office, 2015.

"The four famines" : root causes and a multilateral action plan : hearing before the Subcommittee on

United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on Multilateral International Development, Multilateral Institutions, and International Economic, Energy, and Environmental Policy, author.
Washington : U.S. Government Publishing Office, 2019.