Four in 10 South Sudanese need aid but violence blocks access - U.N.
Thousands of people are on the move across the country, seeking safety from violence, while 4.9 million need emergency assistance such as food and water
Gunfire erupts in army base in South Sudan capital - witness
SOUTHSUDAN-UNREST (UPDATE 1,PIX):UPDATE 1-Gunfire erupts in army base in South Sudan capital - witness
Gunfire erupts in army base in S. Sudan capital - witness
SOUTHSUDAN-UNREST (URGENT):Gunfire erupts in army base in S. Sudan capital - witness
U.N. warns of possible humanitarian disaster in South Sudan
SOUTHSUDAN-UN/:UN warns of possible humanitarian disaster in South Sudan
A member of anti-government forces who used to work as a teacher, holds his gun next to destroyed buildings in the town of Malakal, Upper Nile State
A member of anti-government forces who used to work as a teacher, holds his gun next to destroyed buildings in the town of Malakal, Upper Nile State, which is currently held by anti-government forces, March 4, 2014. REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS CONFLICT)
Members of anti-government forces sit on chairs in the town of Malakal, Upper Nile State
Members of anti-government forces sit on chairs in the town of Malakal, Upper Nile State, which is currently held by anti-government forces, March 4, 2014. REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS CONFLICT)
Members of anti-government forces pose for a photo in the town of Malakal, Upper Nile State
Members of anti-government forces pose for a photo in the town of Malakal, Upper Nile State, which is currently held by anti-government forces, March 4, 2014. REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS CONFLICT)
A woman gets water next to two men from the anti-government forces heading towards the Nile River in the town of Malakal, Upper Nile State
A woman gets water next to two men from the anti-government forces heading towards the Nile River in the town of Malakal, Upper Nile State, which is currently held by anti-government forces, March 4, 2014. REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS CONFLICT)
A young man of the anti-government forces rests in the town of Malakal, Upper Nile State
A young man of the anti-government forces rests in the town of Malakal, Upper Nile State, which is currently held by anti-government forces, March 4, 2014. REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS CONFLICT)
A woman sits on a bed in the headquarters of the anti-government forces in the town of Malakal, Upper Nile State
A woman sits on a bed in the headquarters of the anti-government forces in the town of Malakal, Upper Nile State, which is currently held by anti-government forces, March 4, 2014. REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS CONFLICT)