FILE - South Sudan's President Salva Kiir, right, and Vice President Riek Machar, left, attend a Holy Mass led by Pope Francis at the John Garang Mausoleum in Juba, South Sudan Sunday, Feb. 5 ...

Machar, whose political rivalry with President Salva Kiir has in the past exploded into civil war, said last month that the firing of several of his allies from posts in the government threatened ...

For the best experience, please enable JavaScript in your browser settings. South Sudan President Salva Kiir Mayardit leaves stage after making speech during the ...

"This (Thursday) morning, I spoke with President Salva Kiir Mayardit of South Sudan and First Vice President Riek Machar about the escalating security situation in the country," Ruto said.

FILE - South Sudan's President Salva Kiir, right, and Vice President Riek Machar, left, attend a Holy Mass led by Pope Francis at the John Garang Mausoleum in Juba, South Sudan Sunday, Feb. 5 ...