The United Nations Security Council expressed serious concern on Tuesday over the failure of South Sudanese rebel leader Riek Machar to return to Juba to take up his old post as deputy to President Salva Kiir as part of a peace deal.
UN peacekeeping chief Herve Ladsous briefed the 15-member council on South Sudan at the request of the United States. Machar had been due to return to Juba on Monday, but a spokesman for his group said logistical reasons had delayed his travel.