Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons as they march in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons as they march in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons as they march in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons as they march in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons as they march in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons as they march in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS TPX IMAGES OF THE DAY)
Rebel fighters gather in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters gather in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state
Rebel fighters hold their weapons in a village in the rebel-controlled territory of Upper Nile state, February 9, 2014. REUTERS/Goran Tomasevic (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS ELECTIONS)
U.S. urges removal of foreign fighters from South Sudan
U.S. expresses concern over reported violations of a shaky ceasefire agreement between South Sudan's government and rebel forces and urges the removal of foreign fighters engaged in the conflict