The United States National Security Council (NSC) is the national security council used by the president of the United States for consideration of national security, military, and foreign policy matters. Based in the White House, it is part of the Executive Office of the President of the United States, and composed of senior national security advisors and Cabinet officials.
The assistant to the president for national security affairs (APNSA), commonly referred to as the national security advisor (NSA), is a senior aide in the Executive Office of the President, based at the West Wing of the White House.
Herbert Raymond McMaster is a retired United States Army lieutenant general who served as the 25th United States National Security Advisor from 2017 to 2018. He is also known for his roles in the Gulf War, Operation Enduring Freedom, and Operation Iraqi Freedom.
The Office of Science and Technology Policy (OSTP) is a department of the United States government, part of the Executive Office of the President (EOP), established by United States Congress on May 11, 1976, with a broad mandate to advise the President on the effects of science and technology on domestic and international affairs.
An adviser or advisor is normally a person with more and deeper knowledge in a specific area and usually also includes persons with cross-functional and multidisciplinary expertise. An adviser's role is that of a mentor or guide and differs categorically from that of a task-specific consultant. An adviser is typically part of the leadership, whereas consultants fulfill functional roles.
Edward Stefanski is an American sports executive and former professional basketball player. He currently is the Senior advisor of the Detroit Pistons of the National Basketball Association (NBA).
Nancy Eileen McEldowney is an American academic and diplomat who served as the national security advisor to Vice President Kamala Harris from January 20, 2021, to March 21, 2022. She was previously a career Foreign Service officer, served as United States ambassador to Bulgaria (2008–2009), and was director of the Foreign Service Institute from February 2013 until June 2017.
The National Space Council is a body within the Executive Office of the President of the United States created in 1989 during the George H. W. Bush administration, disbanded in 1993, and reestablished in June 2017 by the Donald Trump administration. It is a modified version of the earlier National Aeronautics and Space Council (1958–1973).
Robert Charles O'Brien Jr. is an American attorney who served as the twenty-seventh United States national security advisor from 2019 to 2021. He was the fourth and final person to hold the position during the first presidency of Donald Trump. He is currently the chairman of the American Global Strategies firm advising companies on international politics, the U.S. government, and crisis management.
Michael C. Donilon is an American attorney and campaign consultant who is a longtime advisor to Joe Biden, the 46th President of the United States. He was the chief strategist of Biden's 2020 presidential campaign and served in the same capacity in the 2024 presidential campaign before Biden dropped out of the race on July 21, 2024. He was a senior advisor to Biden during the first three years of his presidency. Prior, Donilon was working as a partner at AKPD Message and Media. Between 2009 and 2013, he served as Counselor to Vice President Biden in the Obama administration. Before his White House appointment, Donilon worked with the vice-presidential candidate to help him prepare for the debates and as a traveling advisor.
Philip H. Gordon is an American diplomat and international relations scholar. From March 21, 2022 to January 20, 2025 he served as Assistant to the President and National Security Advisor to the Vice President of the United States, Kamala Harris. Earlier in his career, he was Assistant Secretary of State for European and Eurasian Affairs (2009–2011) and Special Assistant to the President and White House Coordinator for the Middle East, North Africa, and the Persian Gulf Region (2013–2015) during the Obama administration.
Senior Advisor to the President is a title used by high-ranking political advisors to the president of the United States. White House senior advisors are senior members of the White House Office. The title has been formally used since 1993.
Jacob Jeremiah Sullivan is an American attorney who served as the U.S. National Security Advisor from 2021 to 2025 under president Joe Biden.
Victoria Curtin Gardner Coates is an American art historian, blogger and political consultant. She served as Senior Advisor to Energy Secretary Dan Brouillette in 2020 and later was appointed to run the Middle East Broadcasting Networks. She served on the United States National Security Council, originally as the Special Assistant to the President and Senior Director for Strategic Assessments before getting promoted to Deputy National Security Advisor upon the nomination of Robert C. O'Brien.
Joseph Keith Kellogg Jr. is an American statesman, diplomat, and retired lieutenant general in the United States Army. He previously served as the National Security Advisor to Vice President Mike Pence, and as the Executive Secretary and Chief of Staff of the United States National Security Council in the first Trump administration. He served as National Security Advisor on an acting basis following the resignation of Michael T. Flynn. In November 2024, President-elect Trump selected Kellogg to be his special envoy for Ukraine and Russia.
Karine Jean-Pierre is a French-American political advisor who served as the White House press secretary from May 13, 2022 to January 20, 2025, and a senior advisor to President Joe Biden since October 7, 2024. She is the first black person and the first openly LGBTQ person to serve in the position of White House press secretary. Previously, she served as the deputy press secretary to her predecessor Jen Psaki from 2021 to 2022 and as the chief of staff for U.S. Vice Presidential candidate Kamala Harris during the 2020 presidential campaign.
Colin Hackett Kahl is an American political scientist who served as under secretary of defense for policy in the Biden administration from April 28, 2021, to July 17, 2023. Previously, he served as national security advisor to the vice president under then-Vice President Joe Biden (2014–2017). After the Obama administration, Kahl served as a Steven C. Házy Senior Fellow at Stanford University.
Charles Martin Kupperman is a former United States Deputy National Security Advisor for President Donald Trump, a position he held from January to September 2019. He also was the acting United States National Security Advisor for eight days in September 2019 between John Bolton and Robert C. O'Brien.
Rebecca Lissner is an American political scientist and foreign policy analyst who served as Deputy National Security Adviser to Vice President Kamala Harris from 2022 to 2025. Previously, she was Acting Senior Director for Strategic Planning on the National Security Council, where she oversaw the creation of the Biden administration's National Security Strategy and directed the Russia Strategy Group. During the Obama administration, Lissner served as Special Advisor to Deputy Secretary of Energy, Elizabeth Sherwood-Randall.
