What are you going to do about it, Mr President?

This morning WSJ has an excellent editorial on President Obama's response to ISIS's beheading of American journalist James Foley:

[President Obama] said that Foley's killers in the jihadist Islamic State in Iraq and al-Sham, or ISIS, "have rampaged across cities and villages, killing innocent, unarmed civilians in cowardly acts of violence. They abduct women and children, and subject them to torture and rape and slavery. They have murdered Muslims—both Sunni and Shia—by the thousands. They target Christians and religious minorities, driving them from their homes, murdering them when they can for no other reason than they practice a different religion." All of this is horribly true. It was also true a year ago. The question now—what the world wants to know now, Mr. President—is what are you going to do about it?