Washington. The U.S. said on Saturday it would revoke all visas held by South Sudanese passport holders over South Sudan's failure to accept the return of its repatriated citizens, at a time when many in Africa fear that country could return to civil war.

Washington is revoking all visas for South Sudanese passport holders and blocking new arrivals, the US State Department said, accusing the African nation of not accepting its nationals expelled from the United States.