Ukrainian and European officials, analysts and entrepreneurs keep asking privately, “What’s up with Trump?”

© Aleksey Kondratyev for The New York Times

Ukrainian and European officials, analysts and entrepreneurs keep asking privately, “What’s up with Trump?”

Even if it sounds unrealistic, Trump can do something important with the entire country frayed and on edge: push for calm and unity.

Without trust between America and China on A.I., the risks extend far beyond their borders.

Without trust between America and China on A.I., the risks extend far beyond their borders.

The U.S. and China must agree on a trust architecture for A.I., or rogue entities will destabilize the two superpowers long before they fight a war.

The U.S. and China must agree on a trust architecture for A.I., or rogue entities will destabilize the two superpowers long before they fight a war.