National Intelligence officials believe that terrorists are exploiting the current refugee exodus from Iraq and Syria and hiding among innocent civilians to reach targeted countries.
Lt Stewart said: “ISIS was taking advantage of the torrent of migrants to insert operatives into that flow,” adding that they were “pretty skilled at phony passports so they can travel ostensibly as legitimate travelers.”
ISIS fighters have reportedly seized Syrian passport facilities with machines capable of manufacturing passports.
Director of National Intelligence James Clapper believes that ISIS as America’s “number one terrorist threat” and warns of homegrown lone wolf attacks were the most likely to be planned.
The security chief added terror groups around the world have been galvanized by the “success” of Paris as well as attacks in California last year.
He explained: “The past attacks might motivate others to replicate opportunistic attacks with little or no warning, diminishing our ability to detect terrorist operational planning and readiness.”
Lieutenant General Vincent Stewart, director of the Defense Intelligence Agency, backed up Mr. Clapper and told senators that ISIS “will probably attempt to conduct additional attacks in Europe, and attempt direct attacks on the US homeland in 2016.