The US has begun surveillance missions over Syria after President Obama vowed to catch the killers of journalist James Foley.
He said: "Rooting out a cancer like ISIL (The US acronym for the Islamic State) won't be easy and it won't be quick. America does not forget. Our reach is long, we are patient and justice will be done."
ITV News Washington Correspondent Robert Moore reports
Kurdish Peshmerga fighters have emerged victorious in the battle for Mosul Dam, but the question is - what will their next move be?
An ITV News team at Mosul Dam was with victorious Kurdish Peshmerga fighters at the complex earlier today.
ITV News joined a Kurdish unit fighting Islamist militants near Irbil and found them using tanks from the 1950s and short on ammunition.