South Sudan famine: What is happening and why?
There's been a famine in the world's newest country, South Sudan, since February this year.
Around 100,000 people in the African country, which was formed in 2011, are now facing starvation - according to the United Nations (UN).
This was the first time that a famine has been declared in any part of the world for six years.
The main reason that South Sudan is facing this food crisis is because of fighting there.
But what is the conflict about?
Where is South Sudan?
South Sudan is a country in central Africa.
It used to be part of the country of Sudan (which is just above it), but it became a country in its own right in 2011, because people living in the the south voted to be an independent country.
This split happened after an agreement that was made in 2005, which ended an extremely long civil war in Sudan. In fact, it was Africa's longest-running civil war.
The population of South Sudan is split up into lots of different ethnic groups.
BBC expert on South Sudan James Copnall says: "At independence, the new nation was very fragile. The army was divided and there was lots of tension."
So fighting has not stopped since it became a new country and it has had a devastating impact on people living there.
Who is fighting who?
Ever since South Sudan was born, different ethnic groups in the country have fought against each other for power and resources, like cattle.
This continued after disagreements between the president of South Sudan - a man called Salva Kiir Mayardit - and his vice-president called Riek Machar.
In July 2013, President Salva Kiir sacked his vice-president and other important members of the government.
In December 2013, he accused Mr Machar of wanting to take power off him - and what started as a political row became a civil war affecting the whole country, with different ethnic groups fighting each other.
Some groups supported President Salva Kiir, while others were loyal to Mr Machar.
In just a couple of years, many thousands of people died and over 2 million were forced to flee from their homes.
What's happened since the civil war begun?
In 2014, both sides agreed to talk with each other to try to sort out their problems.
In August 2015, they signed a deal with each other, after the UN said they would be punished if they didn't try to sort things out.
The sacked vice-president, who had fled, came back to the capital of South Sudan called Juba in April 2016, in order to become vice-president again.
But it didn't last long. In July 2016, Mr Machar's bodyguards and President Kiir's guards started fighting, and there were several days of more violence.
Hundreds of people died and more than 100,000 people fled across the border.
Mr Machar was fired again and he fled the country.
What's going on at the moment?
James Copnall says: "The main politicians, President Salva Kiir and the rebel leader Riek Machar aren't able to work together and many of the soldiers still want to fight, often to take revenge for friends or family members who have died in the war.
"The nation is divided. Lots of new anti-governments groups have been formed and the battles have spread to new areas."
How has the fighting affected children?
It has had a devastating impact on ordinary people living in South Sudan - especially children.
Firstly, many have been caught up in the violence. Some children have even been forced to become soldiers.
Secondly, a huge number of people have had to flee from their homes. This means that children don't have somewhere safe to live and aren't able to go to school.
"Since the war began, more than 3.5 million people have now fled, leaving behind their homes and most of what they own. They now need help just to survive," James Copnall says.
Thirdly, there isn't enough food - which is why the famine has been declared - meaning many children are starving.
Prices for basic food have become extremely high, meaning families cannot afford to get what they need to eat.
Aid agencies are also currently unable to reach all of the people who need their help.
UN assistant secretary general Justin Forsyth said: "Nobody should be dying of starvation in 2017. There is enough food in the world."
But until the conflict in South Sudan stops, it is likely that life for ordinary people living there will continue to be a struggle.
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