(Reuters) – The sophistication, wealth and military might of Islamic State militants represent a major threat to the United States that may surpass that once posed by al Qaeda, U.S. military leaders said on Thursday. “They are an imminent threat to every interest we have, whether it’s in Iraq or anywhere else,” Defense Secretary Chuck Hagel told reporters at the Pentagon. Hagel’s assessment of Islamic State, which gained strength during Syria’s civil war and swept into northern Iraq earlier […]