The second video of an American beheaded by ISIS prompted fast calls for more action . In the video, a masked militant is seen beheading Foley with his own knife. Experts say ISIS is a sophisticated organization and more robust action may be complicated . Obama `` is now forced to respond because of this cruel and savage use '' of social media , one expert says .
The second video of an American beheaded by ISIS prompted fast calls for more action . Members of Congress from both sides of the aisle urge President Obama to act quickly . Experts say ISIS is a sophisticated organization and more robust action may be complicated . Obama `` is now forced to respond because of this cruel and savage use '' of social media , one expert says .