Seven million in Yemen face threat of famine

The UN Security Council has been told that seven million people in Yemen are facing the threat of famine.

The body’s humanitarian chief, Stephen O’Brien, says the crisis is entirely caused by the civil war.

The United Nations is once again calling for Sanaa airport to be reopened to allow in aid and let Yemenis seek medical help.

Al Jazeera’s Rosiland Jordan reports from the UN headquarters in New York.