President Vladimir Putin of Russia recognized the independence of two territories in eastern Ukraine, portions of which are controlled by Russia-backed separatists, and has ordered the deployment of …

More than three years after the start of the Syrian civil war, debates continue about what role, if any, the United States should play in the conflict. Ryan C. Crocker of Texas A&M, Freedom House's C…

Fei-Fei Li discusses artificial intelligence and other emerging technologies that are certain to have enormous implications for this country and the world.    This meeting is the eighth session in…

Watch economist Ian W.H. Parry, Richard L. Sandor of the Chicago Climate Exchange, and Princeton's Robert H. Socolow discuss the best economic approach to mitigating global greenhouse-gas emissions.