The crisis in Iraq will "get worse before it gets better", retired Major General Tim Cross told Good Morning Britain.
However, Major General Cross, a military logistic expert and veteran of Iraq, emphasised that "we are not going to solve this problem in the Middle East by reengaging in conflict" and said Britain would not put combat troops on the ground.
Instead, he said, we must support the Kurds to fight the Islamic State.
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.