What’s causing insecurity in South Sudan?

South Sudan’s unity government, led by President Salva Kiir with former rebel leader, Riek Machar as First Vice President, is facing mounting tensions, and clashes between forces allied to the president and first vice president are threatening a fragile power-sharing agreement. Could the young nation be heading towards a new civil war? For the first time in 17 years, Libya is calling on foreign companies to explore oil in its territory. But will investors be forthcoming? And why South Africa's apartheid reparations fund remains largely unspent, 30 years after it was set up to compensate victims of gross human rights violations.Presenter: Charles Gitonga Technical Producer: Craig Kingham Producers: Sunita Nahar in London. Frenny Jowi in Nairobi and Blessing Aderogba in Lagos Senior Journalist: Patricia Whitehorne Editors: Andre Lombard and Alice Muthengi