Rebecca Lissner

Senior Fellow for U.S. Foreign Policy

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Expert Bio

Rebecca Lissner is a senior fellow for U.S. foreign policy at the Council on Foreign Relations (CFR). Dr. Lissner is a leading scholar of American grand strategy who has served in senior national security and foreign policy roles in the White House.

Lissner most recently served as deputy assistant to the President and principal deputy national security advisor to the Vice President in the Biden-Harris Administration, counseling Vice President Kamala Harris and senior White House leadership on the full range of national security and foreign policy matters, including frequently serving as the Vice President's representative in the U.S. government Principals Committee and Deputies Committee, the senior-level decision-making and crisis-management forums on pressing national security issues composed of Cabinet members and their deputies. She directly supported the Vice President’s role in crisis response and strategic decision-making on issues ranging from U.S.-China competition and Russia’s war in Ukraine to AI, defense, and climate policy, including meetings with heads of state and international summits such as the Munich Security Conference, COP28, and AI Safety Summits. As one of Vice President Harris’s chief foreign policy advisers, Lissner also helped shape the Vice President and Democratic nominee for president’s messaging on national security and foreign policy.

Previously, Lissner served as acting senior director and director for strategic planning on the National Security Council (NSC). In this capacity, she helped craft the Biden-Harris administration’s foreign policy vision as a lead author of President Biden’s National Security Strategy, directed the Russia-Ukraine “Tiger Team” contingency planning process, and provided strategic counsel to the National Security Advisor. She served as a foreign policy adviser to the Biden and Harris campaigns during the 2020 election and advised Hillary Clinton’s campaign and presidential transition team during the 2016 election. During the Obama Administration, she served as Special Advisor to the Deputy Secretary at the U.S. Department of Energy.

Before her service at the White House, Rebecca was a professor at the U.S. Naval War College, where her research focused on American grand strategy. She is the author of two books: Wars of Revelation: The Transformative Effects of Military Intervention on Grand Strategy (Oxford University Press, 2021) and An Open World: How America Can Win the Contest for 21st Century Order (co-authored with Mira Rapp-Hooper, Yale University Press, 2020). She has held research positions at Georgetown University’s Security Studies Program, the University of Pennsylvania’s Perry World House, the Council on Foreign Relations, Yale University’s International Security Studies program, and Columbia University’s Saltzman Institute of War and Peace Studies. Rebecca has written extensively on national security in Foreign Affairs, Foreign Policy, The Atlantic, The Washington Post, and other leading outlets, and has provided expert analysis on CNN, MSNBC, the BBC, and other major media platforms. Lissner holds an AB in social studies from Harvard University and an MA and PhD in government from Georgetown University.

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