South Sudan: Inside Africa's largest refugee crisis

A once bustling South Sudan border town with Uganda has fallen into an eerie silence amid a war that has led to the biggest refugee crisis in Africa.

Largely abandoned late last year, Oraba-Kaya is surrounded by hills where rebels are launching attacks on soldiers loyal to the government in South Sudan's capital, Juba.

With the exception of Congolese lorries and a few locals, nothing passes in either direction.

An uniformed Ugandan soldier, stationed at the sleepy border pos...