Nearly 14 million children have been affected in battle-torn Syria ever since the civil war began four years ago, according to the data by UNICEF.

In the war between forces loyal to President Bashar al-Assad of Syria and those conflicting to his rule as well as jihadist militants from Islamic State, nearly 200,000 people have lost their lives.

About two million children have taken refuge in neighbouring countries of Iraq, Jordan, Lebanon, Turkey and Egypt.

The brutal conflict in Syria is the worst of humanitarian disaster with about 7.5 million Syrian children currently in need of charitable help which is nearly 15 times the number in 2012 and nearly 2.6 million children no longer go to school.