Central African Republic
Democratic Republic Of Congo
Thousands of families caught up in South Sudan’s famine are hiding from marauding gunmen in the swamps and islands of the River Nile.
Launching a funding appeal, the UN says drought, chronic poverty and Boko Haram Islamic militants have led to the emergency.
Parts of the war-ravaged country have been hit by famine. Officials fear almost half the territory could be in a state of food insecurity by July.
Yemen has only around three months supply of wheat stocks and could see similar shortages of other food grains such as rice.