European energy security : U.S. interests and coercive Russian diplomacy : hearing before the Subcom

United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on Europe and Regional Security Cooperation, author.
Washington : U.S. Government Publishing Office, 2019.

Pipeline politics : energy and power in Europe : July 23, 2019, briefing of the Commission on Securi

United States. Congress. Commission on Security and Cooperation in Europe, author.
Washington : Commission on Security and Cooperation in Europe, 2019.