Ambassador Thomas Pickering is vice chairman of Hills & Company, an international consulting firm providing advice to U.S. businesses on investment, trade, and risk assessment issues abroad, particularly in emerging market economies. He retired in 2006 as senior vice president of international relations for Boeing. He has had a career spanning five decades as a U.S. diplomat, serving as under secretary of state for political affairs, U.S. ambassador and representative to the United Nations, and ambassador to Russia, India, Israel, Nigeria, Jordan, and El Salvador. He also served on assignments in Zanzibar and Dar es Salaam, Tanzania. He holds the personal rank of career ambassador, the highest in the U.S. Foreign Service. He has held numerous other positions at the State Department, including executive secretary and special assistant to Secretaries Rogers and Kissinger and assistant secretary for the Bureau of Oceans, Environmental and Scientific Affairs. He is based in Washington, DC.