Rebels take a break under a tree in a rebel controlled territory in Jonglei State
Rebels take a break under a tree in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
South Sudan's rebel leader Riek Machar sits in his field office in a rebel controlled territory in Jonglei State
South Sudan's rebel leader Riek Machar sits in his field office in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
Rebel General Peter Gatdet Yaka gestures as he speaks to South Sudan's rebel leader Riek Machar in a rebel controlled territory in Jonglei State
Rebel General Peter Gatdet Yaka gestures as he speaks to South Sudan's rebel leader Riek Machar (not seen) in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
South Sudan's rebel leader Riek Machar speaks to rebel General Peter Gatdet Yaka in a rebel controlled territory in Jonglei State
South Sudan's rebel leader Riek Machar speaks to rebel General Peter Gatdet Yaka (not seen) in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
South Sudan's rebel leader Riek Machar talks on the phone in his field office in a rebel controlled territory in Jonglei State
South Sudan's rebel leader Riek Machar talks on the phone in his field office in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
South Sudan's rebel leader Riek Machar gestures as he speaks in a rebel controlled territory in Jonglei
South Sudan's rebel leader Riek Machar gestures as he speaks to rebel General Peter Gatdet Yaka (not seen) in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS TPX IMAGES OF THE DAY)
South Sudan's rebel leader Riek Machar gestures as he speaks in a rebel controlled territory in Jonglei
South Sudan's rebel leader Riek Machar gestures as he speaks to rebel General Peter Gatdet Yaka (not seen) in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
Rebels take a break under a tree in a rebel controlled territory in Jonglei State
Rebels take a break under a tree in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
A rebel fighter's child lies under a tree in a rebel controlled territory in Jonglei State
A rebel fighter's child lies under a tree in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS) TEMPLATE OUT
Rebels take a break under a tree in a rebel controlled territory in Jonglei State
Rebels take a break under a tree in a rebel controlled territory in Jonglei State February 1, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)