At the start of Syria's civil unrest, Omar would rally against the government alongside his schoolmates, later taking to the streets in his hometown of Salqin.
Two years later, at the age of 14, he became a child soldier, training to join the ranks of rebel group Jabhat al-Nusra. He learned how to use weapons, make bombs and use mines. But when it came to fighting on the front line, he was scared.
http://www.cnn.com/2014/06/23/world/meast/hrw-child-soldiers/