U.S. accuses South Sudan sides of blocking peace, warns over support

General Simon Gatwech Dual, the chief of staff of the rebel troops of the Sudan People's Liberation Army in Opposition (SPLA-IO), waves to supporters as he arrives at the Juba International Airport in South Sudan's capital Juba, April 25, 2016.

SOUTH SUDAN: Washington accused both sides in South Sudan's two-year conflict of blocking peace efforts and protested, rebels said, by pulling funding for a flight to return their leader Riek Machar to the capital.

Underlining growing international frustration over months of delays and wrangling, the U.S. State Department said South Sudan's government had as recently as Saturday refused to give landing permission to planes carrying Machar.