In the past four years, top officials from Jake Sullivan to Katherine Tai have sat down with FP to offer insight into U.S. President Joe Biden’s foreign policy. Together, they painted a picture of the “Biden doctrine” on foreign aid, relations with Europe, U.S.-China competition, and more.

On Biden’s final weekend in office, we’re revisiting some of the most illuminating conversations to provide an insider’s look at the outgoing president’s foreign-policy legacy.

White House National Security Advisor Jake Sullivan calls on reporters at the White House in Washington on Dec. 7, 2021.Chip Somodevilla/Getty Images

Defining the Biden Doctrine

U.S. National Security Advisor Jake Sullivan sat down with Foreign Policy to talk about Russia, China, relations with Europe, and year one of the Biden presidency.

U.S. Trade Representative Katherine Tai in her office in Washington on March 15, 2023. Jesse Dittmar photos for Foreign Policy

The White House’s Case for Industrial Policy

U.S. Trade Representative Katherine Tai counters critics who say the United States is fostering unfair competition.

Oriana Fenwick illustration for Foreign Policy

The Technocrat

Gina Raimondo has reshaped the Commerce Department for technological competition with China.

Colin Kahl, the U.S. undersecretary of defense for policy, testifies during a Senate Armed Services Committee hearing in Washington on Oct. 26, 2021.Tom Williams/CQ-Roll Call, Inc via Getty Images

Colin Kahl: ‘We’re All In’ on Supporting Ukraine

The Pentagon’s top policymaker on Russia’s war in Ukraine, the impact of recent leaks, and the long-term challenge of China.

U.S. Agency for International Development administrator Samantha Power testifies before the House Foreign Affairs Committee in Washington on May 17, 2022.Jose Luis Magana/AFP via Getty Images

Samantha Power on Biden’s Foreign Aid Legacy

The USAID chief on Gaza and why she feels she can make more of a difference in government than outside it.