The sophistication, wealth and military might of Islamic State militants pose a major threat to the United States that may surpass that from al Qaeda, US Defence Secretary Chuck Hagel said.
They are beyond just a terrorist group. They marry ideology, a sophistication of ... military prowess. They are tremendously well-funded. This is beyond anything we've seen.
Asked if ISIS posed a threat comparable to that of the attacks of 9/11, Hagel said the group was "as sophisticated and well-funded as any group we have seen."
A British family have told ITV News of their devastation after discovering a close relative is fighting with the Islamic State in Iraq.
A French journalist who was held hostage with James Foley in Syria has told ITV News it was "devastating" to see his murder.