On March 12, 1947, President Harry S. Truman delivered a speech to Congress asking to authorize $400 million in emergency assistance to Greece and Turkey as part of support to the Greek government against a Communist insurgency. In doing so, Truman articulated that the United States must “support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures” and that totalitarian regimes imposed on free peoples posed a threat to American national security. The Truman Doctrine established that targeted U.S. economic and security assistance to front-line democracies could be a strategic tool in combatting the threat from hostile authoritarianism. It also reinforced the reality that effectively insulating America from outside threats required a maintaining global presence to include aid for strategic partners. The lessons of the Truman Doctrine remain relevant today, as targeted U.S. assistance for strategic partners and allies like Taiwan, Israel, and Ukraine are critical insulating layers protecting against our current authoritarian threats. In this video, Matthew Kroenig, Vice President and Senior Director of Scowcroft Center for Strategy and Security at the Atlantic Council, and Dan Twining, President of the International Republican Institute, analyze the speech and the influence of the Truman Doctrine today.