Aid groups ramped up operations to help millions of drought-stricken people in the Horn of Africa.
Al-Shabab in 2009 began to ban aid agencies, fearing groups could promote un-Islamic way of life.
US aid groups said N Koreans are reduced to searching for wild grass to eat.
Aid workers are preparing plans for a hurricane that forecasters said could hit Haiti this week.
A cholera epidemic in Haiti has killed more than 250 people, the government said.
The groups expect new policy will make US foreign assistance more effective.
The international community has betrayed the people of Gaza by failing to end an Israeli blockade to allow the territory to be rebuilt, a group of 16 rights groups said in a report on Tuesday.
Day in Pics: 30th August
August 30, 2014
Famous Ganesh Pandals in Mumbai