The buildup came as the group Save the Children reported Syria’s nearly six-year-old civil war has exposed children to “toxic stress” that’s leading to self-harm, aggression and suicide. Researchers found that two-thirds of Syria’s children have lost a family member, had their houses bombed or suffered injuries from fighting. More than 70 percent of those surveyed said Syrian children suffer from bedwetting and involuntary urination—symptoms of toxic stress and post-traumatic stress disorder.