Child marriage among Syrian refugee children is on the rise. Two girls tell us about their lives as wives and mothers. Each year, childhood ends for an estimated 15 million girls around the world who marry before the age of 18, according to the International Centre for Research on Women (ICRW). South Asia has the largest concentration of child brides, but early marriage is a global phenomenon. Girls living in poverty are more susceptible, and by marrying so young, research shows, girls perpetuate the cycle of poverty. UNICEF says they typically drop out of school and as a result, face poor job prospects.