No child is safe from the bloody conflict in Syria amid reports of the "shocking" scale of brutality against youngsters, a UK-based group has said.
A report from War Child said young Syrians were being deliberately murdered in execution-style killings, raped, abused, used as human shields and even enlisted against their will to fight.
War Child has urged the UK Government to step up efforts to protect children caught up in the fighting, saying it believes between 500 and 1,300 children had been killed, while eight-year-olds were being enlisted as soldiers.
Girls and boys aged 12 have been sexually abused, more than 600 children have been placed in detention centres where torture is commonplace and 49 children were massacred in one incident, said the report.
One 10-year-old girl saw her father killed, saying:
Rob Williams, chief executive of War Child, which is providing emergency assistance to Syrian children refugees in Lebanon, said that neither side of the conflict is protecting children in the areas they control.
"In fact, there are deliberate violations of thousands of innocent children including murder, rape and abduction. These actions will scar Syria for generations, he said.
He went on:
The International Development Secretary Andrew Mitchell said any form of violence directed against children in Syria is "shocking and abhorrent".
He said Britain has worked to exert international pressure to bring an end to the violence, and we will continue to work to this end.
He added: "Earlier this month, Britain doubled its humanitarian support to people inside Syria caught up in the violence, and refugees forced to flee to neighbouring countries.
"We have led the way in ensuring that emergency food supplies, medical support and other life-saving aid is reaching those who need it most, including tens of thousands of families, children and young people."