Children play with a suitcase in a IDP camp for the Nuer ethnic group inside the UNMISS compound in Bor, South Sudan, on February 27, 2014. War crimes have been committed by all sides in conflict-wracked South Sudan, Human Rights Watch said Thursday, reporting widespread atrocities in weeks of carnage in the world’s youngest nation. Thousands have been killed and almost 900,000 forced from their homes by over two months of battles between rebel and government forces, backed by troops from neighbouring Uganda.