U.S. officials are sounding a holiday terror alarm that's one of the most serious in years. Their concern: recent attacks overseas combined with stepped-up recruiting in the United States – and a call-to-arms during Ramadan.
In the last week, terrorists have struck and killed innocent vacationers in Tunisia, leaving 39 dead. In Kuwait, a suicide bomber attacked a Shiite mosque, killing 27 and injuring hundreds.
ISIS has claimed responsibility for both attacks. Meanwhile on Tuesday, a suicide bomber attacked troops serving with NATO in Afghanistan.