The Islamic State in Iraq and Syria (ISIS) is being touted as the newest "threat" to the American homeland: hysterics have pointed to Chicago as the locus of their interest, and we are told by everyone from the President on down that if we don't attack them ? i.e. go back into Iraq (and even venture into Syria) to root them out ? they'll soon show up on American shores.
How is this supposed to work? Well, you see, that monster who beheaded James Foley had a British accent, and there are reports of more than a few Brits (and Americans) traveling to Syria to fight on behalf of ISIS. So these jihadi "internationalists" could always just fly back to either Britain or the US, where another 9/11 would shortly be in the works.