U.S. military officials are closely watching social media and news reports that say ISIS believes it may soon come under siege in Raqqa, Syria, its self-declared capital.<br />"We have seen this declaration of emergency in Raqqa, whatever that means," Col. Steve Warren, the spokesman for the U.S.-led anti-ISIS coalition, told reporters Friday.<br />"We know this enemy feels threatened, as they should."<br />Media reports have indicated that ISIS is moving personnel around the city and trying to put up covers in certain areas to shield potential targets from airstrikes and ground attacks.
