Is the Muslim world divided over an ancient sectarian conflict? Not really: It's twenty-first-century power politics.

I have a new essay in the May/June issue of Foreign Affairs—“The Clean Energy Revolution: Fighting Climate Change with Innovation”—which I co-authored with Teryn Norris, a former advisor at the Depar…

Inauguration Day is now exactly one year away. In 366 days—2016 is a Leap Year—one of the candidates now barnstorming Iowa and New Hampshire will take the oath of office. Everything will change the m…

Ebola is not showing the international community at its best. Even as Ebola panic seems to be spreading internationally, with possible new cases in Macedonia and the Czech Republic and Ebola deaths i…

“Act in haste, repent at leisure.” “Look before you leap.” “Fools rush in where angels fear to tread.” Warnings against acting rashly are frequently offered. They are just as frequently ignored. The …