Negotiating with ISIS might have saved James Foley. But the U.S., unlike European nations, doesn't do that -- nor does it pay ransoms.
Islamic State has continued spreading propaganda on the Diaspora and VKontakte social networks.
Raising rates too quickly could weaken the job market as money to expand and create jobs becomes more expensive, Yellen said.
The Obama administration vowed to eradicate the Islamic State after the militants beheaded American journalist James Foley on video.
The Pentagon has protested what it said were dangerous maneuvers by a Chinese warplane, including a barrel roll over a U.S. surveillance jet.
The editorial board of the D.C. newspaper announced it would drop the name in any reference to the NFL team.
2.9 million Syrians have fled the country and another 6.4 million are internally displaced. The UN believes it has "failed."