Examples of DR. Williams' congressional Testimony include:
Neo-Trusteeship in South Sudan, Written Testimony, Senate Committee on Foreign Relations, (September 2016).
Creating a Strategic Framework for Addressing the Conflict between Sovereignty and Self-Determination: Earned Sovereignty, House Committee on Foreign Affairs Subcommittee on Europe, Eurasia, and Emerging Threats (March 2016).
Winning the Peace in Kosovo: Time to Formulate a Strategy, Senate Foreign Relations Committee, Sub-Committee on European Affairs (June 2000).
Holding War Criminals Accountable, Senate/House Joint Committee on Security and Cooperation in Europe (September 1999).