Hundreds of thousands of people are "slowly starving" in Kenyan refugee camps after US funding cuts reduced food rations to their lowest ever levels, a United Nations official has told the BBC. The impact is starkly visible at a hospital in the sprawling Kakuma camp in the north-west of the East African nation, home to roughly 300,000 refugees who fled strife in countries across Africa and the Middle East. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.