South Sudanese rebel leader Riek Machar has been sworn in as first vice president. He arrived in Juba the capital on Tuesday, after repeated delays to implement a peace agreement. Machar resumes a post he held before the conflict erupted in December 2013. The development ends his 28-month military conflict with President Salva Kiir, which has killed tens of thousands of people. To chat to us about this latest development, Sakina Kamwendo speaks to Ambassador of South Sudan to South Africa, His Excellency Phillip Jada Natana.