Exactly 80 years ago, on Oct. 24, 1945, the United Nations Charter entered into force. But the U.N. is limping through its birthday in a state of internal crisis. Confrontation and self-interest are on the rise in our dysfunctional family of nations. A global war is a significant risk; nuclear weapons holders are openly threatening their use; climate change is making parts of our world uninhabitable; and unregulated AI risks deepening socioeconomic inequality and threatening our cognitive