The last year has been considered a 'nightmare' for children trapped in conflict zones around the world.
UNICEF has summarised 2017 as a brutal year for children who have come under attack in spaces where they should be kept safe.
Children have been deliberately targeted in conflicts in 2017 - being used as human shields, killed, abducted and recruited to fight.
Below is a look at the impact on children in conflict zones in what has been dubbed a 'nightmare year'.
Myanmar
A quarter of Rohingya children under the age of five who fled to Bangladesh from Myanmar are suffering from potentially life-threatening levels of malnutrition, according to the United Nations.
More than 650,000 Muslim Rohingya have fled the mainly Buddhist country since the military operation was launched in Rakhine state in late August.
Myanmar authorities insist the campaign is aimed at rooting out Rohingya militants who attacked police posts on August 25 but the United Nations has said the violence amounts to ethnic cleansing.
Explainer: Who are the Rohingya Muslims 
An older Rohingya child helps other children to cross a bamboo bridge in the Jamtoli refugee camp near Cox's Bazar in Bangladesh. Source: AAP
Yemen
According to UNICEF, around 5,000 children have been killed or seriously injured as a result of the civil war in Yemen. Chronic food and water shortages have taken a toll on those who survive.
"Every 10 minutes a child in Yemen is dying from preventable diseases," Geert Cappelaere, UNICEF's regional director for the Middle East and North Africa, said in November.
Two million children are suffering acute malnutrition and cases of cholera could reach one million in 2018.
Yemen has been devastated by a war between forces loyal to President Abdrabbuh Mansour Hadi and those allied to Houthi rebels.
The UN has counted more than 13,000 civilian deaths and tens of thousands of people who have been injured.
A boy looks at a house destroyed by a past airstrike carried out by a war-plane of the Saudi-led coalition in Sana’a, Yemen. Source: Getty
Nigeria
Militant organisation Boko Haram's eight-year insurgency has killed 20,000 people and displaced 2.6 million more in Nigeria.
In recent months, attacks on military and civilian targets as well as raids on remote villages in the northeast have increased.
Malnourished children receive treatment in a MSF medical centre in Maiduguri, Nigeria. Most are from families displaced by Boko Haram. Source: Getty
Iraq
Iraqi forces expelled the jihadist group ISIL from Mosul in July after months of ferocious fighting.
That was part of a string of defeats which have decimated an organisation that once ruled over millions of people across large parts of Syria and nearly a third of Iraq.
The move ended a regime of terror, anguish and murder.
But Iraq's liberation has come at a great cost; many civilians and security forces died in the conflict.
A child cries onboard a ferry to cross the Tigris River, as Mosul residents returned from the west to the liberated eastern part of the city. Source: AAP
South Sudan
South Sudan's leaders fought for decades for independence, but once they achieved it in 2011, a power struggle between President Salva Kiir and former Vice President Riek Machar led to all out civil war, followed by renewed violence.
At least 100,000 people lost their lives in the conflict, according to the International Crisis Group.
Many South Sudanese were forced to flock to neighbouring Uganda and the Democratic Republic of Congo.
More than two million South Sudanese have become refugees, while another one million people remain internally displaced, according to the UN.
President Kiir has promised a new dawn of peace and stability in 2018.
Elizabeth Nyakoda holds her severely malnourished 10-month old daughter at the feeding center for children in Jiech, Ayod County, South Sudan. Source: AAP
Syria
Syria's ruined rebel holdout region of Eastern Ghouta, from where urgent UN-demanded medical evacuations started on Wednesday, has been under siege for four years, suffering attacks and malnutrition.
More than 340,000 people have been killed and millions have been driven from their homes since Syria's conflict erupted with anti-government protests in 2011.
The conflict has since evolved into a complex war involving international powers and jihadists, including the Islamic State group who seized large parts of Syria in 2014.
Karim, an infant who was injured twice from bombings on Eastern al-Ghouta, rebel-held Douma, Syria. Source: AAP
