The U.N. warns the pandemic has increased the vulnerability of children in conflict zones, who are at heightened risk of abduction, recruitment to fight and sexual violence. In 2020, at least 8,400 children were killed or harmed in wars. Save the Children said the U.N. report left out many perpetrators of grave violations against children, including Ethiopia, Israel and the U.S.-backed, Saudi-led coalition waging war on Yemen, which killed 200 children last year.