syria. if you re sitting in syria today, you want to get to paris, it s a matter of getting in a car and being there in 48 hours. we re protected by our oceans and borders in a way that our european friends aren t. but if you re coming in from paris we let you in? we do. but nothing here is in the category of 100% air titlght. what we re talk about is marginally increasing the odds of an attack. that s all that people in my former line of work do that is chipping away at the odd sflps great to thank you to you. united against terror. the paris attacks triggering an all-out assault. the heart of isis in syria. how hard is it to target a military group? we ll get a military perspective, next.