The New Yorker’s John Cassidy sums up President Obama’s return to the familiar battlefield: “Still, the fact remains: President Obama, long a reluctant warrior, has committed the United States to a risky and open-ended military campaign, the ultimate consequences of which are difficult to predict. Confronted with popular outrage at the beheadings of James Foley and Steven Sotloff, and political opponents keen to exploit any hint of weakness or indecision, the realist has relented.”

+ Fred Kaplan on the complexities: “So, the cause is just, and Obama’s plan sounds reasonable, even nuanced. What could go wrong? Well, as anyone who’s studied the region (and the cavalier predictions made, time and again, by Westerners who go to war there), everything.”