Just months after the atomic bombings ended World War II, representatives gathered in London to launch the United Nations General Assembly, seeking a durable framework to prevent another global catastrophe. The session set the UN's early agenda, including atomic energy control and the election of its first Secretary-General.
The gathering carried enormous symbolic weight: barely four months earlier, the world had witnessed the destructive power of nuclear weapons over Hiroshima and Nagasaki, and the League of Nations' failure to stop fascism was still fresh. Delegates crowded into Central Hall Westminster, a Methodist meeting house rather than a purpose-built chamber, reflecting how hastily the postwar order was being assembled.
Among the first substantive items was a resolution on the peaceful control of atomic energy, foreshadowing decades of Cold War arms-control diplomacy. The Assembly also began the process that would install Norway's Trygve Lie as the UN's first Secretary-General weeks later.
Unlike the League, the UN was designed with a Security Council empowered to authorize collective force, a structural fix for the earlier organization's toothlessness. Though the Cold War would soon paralyze much of that machinery, the UN has endured for nearly eight decades, making this opening session a genuine hinge point in the postwar world.
Key people: Trygve Lie