South Sudan stops U.N. travel based on ethnicity

South Sudanese government security officers prevented several local U.N. staff from travelling to Uganda this week in two incidents believed to based on their ethnicity, U.N. officials said on Wednesday.

South Sudan has been in political turmoil since President Salva Kiir sacked his deputy Riek Machar last year, triggering a conflict that has reopened deep ethnic tensions in the world's youngest country which only won independence from Sudan in 2011.