Obama tells reporters on Martha’s Vineyard that “the entire world is appalled” by Foley’s murder:
No just God would stand for what they did yesterday or every single day,” he said. “A group like ISIL has no place in the 21st century…They have rampaged across cities and villages killing innocent, unarmed civilians in cowardly acts of violence. They abduct women and children and subject them to torture and rape and slavery. There has to be a common effort to extract this cancer so that it doesn’t spread.
His full remarks can be seen here