Since the start of the war, more than 5 million Ukrainians have fled the country, resulting in Europe's fastest-growing refugee crisis since World War II. With women and children making up as many as 90% of refugees, international organizations and rights groups are warning of the growing risk of sexual violence and human trafficking. Ilias Chatzis, the head of the human trafficking and migrant smuggling section at the UN Office on Drugs and Crime joined us on Perspective for a closer look.