Hunger grips Yemen's children

According to the United Nations, half of Yemen's population of 10 million doesn't have enough to eat, and one million children are acutely malnourished.

By joining the Arab Spring, Yemen managed to force out its authoritarian President, Ali Abdullah Saleh.

But the fight for democracy has caused even more problems, as people left their jobs and farms to flee the violence.

And the money promised by Yemen's allies has yet to materialise.