David Pressman is an American lawyer who has served as the United States ambassador to Hungary since 2022. He previously worked in the Obama administration and served as the United States ambassador to the United Nations for Special Political Affairs from 2014 to 2016. Pressman represented the United States at the United Nations Security Council and in related negotiations. Ambassador Pressman is described in the media as a "high profile diplomat" and "one of the world's leading human rights advocates".

Alexander Semyon Vindman is a retired United States Army lieutenant colonel who was the Director for European Affairs for the United States National Security Council (NSC) until he was reassigned on February 7, 2020. Vindman is currently director for the think tank the Institute for Informed American Leadership (IIAL).