Question: During his tenure as Ambassador to Vietnam, Donal Read Heath advocated and carried out American policy under a United States Secretary of State for what president?   
Sentence (from "Shirin R. Tahir-Kheli"): Dr. Tahir-Kheli was the Special Assistant to the President and Senior Director for Democracy, Human Rights and International Operations at the White House National Security Council, from 2003-2005.
Relevant evidence: No