Former defence secretary Sir Malcolm Rifkind has said the US was right to intervene in Iraq as members of the UN have "a responsibility to protect".
"That's a general statement but means when you have some potential humanitarian disaster on a vast scale then you can't just sit back and say how sad it is, you have to try and intervene," the Intelligence and Security Committee chairman told BBC Radio 4's Today programme:
"Here we have a total of 150,000 people who have fled from their homes and in danger of losing their lives."
He said the world could not "directly intervene" in that area, but stressed that limited action could be taken to address the "specific humanitarian threat" against the Yazidi people.
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.