Children stand above an artificial lake in the middle of the Protection of Civilians (PoC) site in Bentiu, South Sudan, on April 28, 2017. Photo by Phil Hatcher-Moore - UNICEF

Children play on the shell of a car abandoned during fighting in the town of Bentiu, South Sudan, on May 4, 2017.

Break time

Drama club rehearsal

A young girl washes her siblings in part of an old, damaged suitcase in the Protection of Civilians (PoC) site in Bentiu, South Sudan, on May 1, 2017. Photo by Phil Hatcher-Moore - UNICEF

A young boy polishes shoes in the market in the Protection of Civilians (PoC) site in Bentiu, South Sudan, on June 8, 2017. Many children work in the market, on stalls, selling firewood, and with odd-jobs such as shoe-shining. Photo by Phil Hatcher-Moore - UNICEF

Children sit in the nursery class in the Upper Nile primary school in the Protection of Civilians site in Bentiu, South Sudan, on May 2, 2017. Photo by Phil Hatcher-Moore - UNICEF

Children walk at sunset through the Protection of Civilians (PoC) site in Bentiu, South Sudan, on May 1, 2017. Photo by Phil Hatcher-Moore - UNICEF

Bida Isaac (9 months) lays under a mosquito net in the stabilisation ward of the Yei hospital in Yei, South Sudan, on April 26, 2017. Isaac was admitted one month previously with severe acute malnutrition, as well as pneumonia and malaria, and was found to be HIV positive. His condition has improved slightly since being admitted, through the therapeutic feeding programme.

Lohali Lokwar holds her eight month old son, Lokwai Lokwar, beside Lonya Lokwar (2) in the stabilisation ward of the Riwoto primary health-care centre in Kapoeta North, South Sudan, on May 24, 2017. Lonyya was been admitted into the ward yesterday, suffering from severe acute malnutrition, complicated by diarrhoea and vomiting. Lohali says his condition started as a stomach ache. As part of his treatment he will receive therapeutic milk every three hours. Photo by Phil Hatcher-Moore - UNICEF

Mabrouk lies on a bed just minutes after having been born in the maternity ward of the IRC clinic in the Protection of Civilians (PoC) site in Bentiu, South Sudan, on May 1, 2017. Photo by Phil Hatcher-Moore - UNICEF

Jayna Jama sits with her one year old twins, Beterian Kiko (left) and Bismak Lem (right), during a consultation at the Lomoko Static Clinic in Yei, South Sudan, on April 26, 2017. Jayna's husband was shot by soldiers whilst making charcoal in December last year, and her twins are suffering from malnutrition, and Beterian has also contracted malaria. They were refrerred to the clinic by community mobilisers. Photo by Phil Hatcher-Moore - UNICEF

A tank, remnants of the fighting here in 2014, lays abandoned and rusting by the side of the road in territory newly taken from rebels by government forces near the town of Koch, South Sudan, on May 6, 2017. This is a major oil-producing area.

A cattle-herder from the Toposa tribe walks through the bush in Kapoeta, South Sudan, on May 24, 2017. Cattle raiding between groups plays out on the stage of the conflict.

A mother carries her baby towards the informal settlement in Aburoc, South Sudan, on May 12, 2017. Thousands of people have been forced from their homes due to fighting between government forces and rebels allied to the former Vice President.

Internally displaced South Sudanese queue for registration by the World Food Programme and UNICEF during a week-long humanitarian mission to Aburoc, South Sudan, on May 12, 2017. Over 17,000 people were registered, to receive food aid, health screening for children, and sanitation supplies.

Volunteers unload aid from a supply helicopter outside the village of Aburoc, South Sudan, on May 11, 2017. The frontline between government forces and rebels lies on the road to Aburoc, and has yet to be cleared of mines and unexploded ordinance, necessitating supplies to be brought in by air.

Men unload sacks of food aid during a distribution in Bentiu, South Sudan, on May 4, 2017.

People queue for a WFP food distribution in the village of Aburoc, South Sudan, on May 14, 2017. Following the registration of over 17,000 people, 180 tonnes of food aid were dropped by aircraft into this remote area, where road access is not possible due to insecurity. Photo by Phil Hatcher-Moore - UNICEF

John Garang (12) milks his family's herd of cattle in the village of Aburoc, South Sudan, on May 11, 2017. John has been here for four days, after fleeing insecurity in his village.

An elderly lady cooks on a camp fire where she lives under a tree in the village of Aburoc, South Sudan, on May 10, 2017. Tens of thousands have fled further north to camps in neighbouring Sudan, as government forces advance, but for many people, the journey is too much.

A mother and children from the Toposa tribe sit under a tree at a cattle camp in Lotelet, Kapoeta North, in South Sudan, on May 24, 2017. Whilst fighting has largely avoided the area, the conflict compounds an already poor area, which is in the midst of a drought, and the region is in the midst of a cholera outbreak.

Nakori Choroo (75) lies on the ground at a cholera treatment centre at the Riwoto primary healthcare centre outside Kapoeta, South Sudan, on May 23, 2017. The centre has seen some more than 320 cases of cholera since late April, in an outbreak that has hit the region.

Thousands of huts cover what were, until a year ago, the fields on the edge of the city. A spate of attacks in April this year brought a new wave of people to the camp.

Fatima has been at the camp for a year now, washing her clothes outside the shelter she occupies on the edge of the camp, ringed by razor wire.

A young girl washes clothes in the grounds of St. Mary's cathedral in Wau, South Sudan, on June 15, 2017. Some 13,000 people live in the cathedral grounds, having taken refuge here after violence broke out a year ago. Photo by Phil Hatcher-Moore - UNICEF

In the old church, where the walls are pockmarked by bullets, two girls lie on a bare bed-frame. Several families live in the hall, and many more outside in makeshift shelters.

A mother walks with her child through the grounds of the Al Sabbah Children's hospital in Juba, South Sudan, on March 28, 2017.

Estelle Charles (15) stands with her six month old sister in an old church hall where she and her family live in an informal camp for the displaced in St. Mary's cathedral in Wau, South Sudan, on June 15, 2017. The hall was the original church, before the cathedral was built in the 1950s. Around 13,000 live in the cathedral grounds, having sought refuge from the fighting that broke out here a year ago. Photo by Phil Hatcher-Moore - UNICEF

"Yangde"* poses for a portrait at his home in Pibor, South Sudan, on June 24, 2017. Yangde joined an armed group in 2012 when he was 12 years old, and was demobilised following negotiations supported by UNICEF in 2015. Yangde is enrolled in several programs that are helping to give him a brighter future, and says he does not want to take up arms again. * name changed Photo by Phil Hatcher-Moore - UNICEF

Boys paddle a boat in the river in Pibor, South Sudan, on June 25, 2017. Credit: Phil Hatcher-Moore/UNICEF

People gather at the market in the late afternoon in Pibor, South Sudan, on June 25, 2017. Photo by Phil Hatcher-Moore - UNICEF

Children play volleyball at the Pibor Youth Centre in Pibor, South Sudan, on June 26, 2017. The centre gives children the space and equipment for recreational activities, and around around 60 of the children attending the centre were formerly associated with armed groups, and demobilised in 2015. This is part of a UNICEF psycho-social support programme. Photo by Phil Hatcher-Moore - UNICEF

A cargo plane is pictured, stuck in the mud as it tried to turn, on the airstrip in Pibor, South Sudan, on June 26, 2017.