Hundreds of thousands of children have been caught up in the violence that has engulfed Ukraine, forcing them to witness violence, evacuations, abandonment and long fraught journeys to safety since Russia invaded the country last month. Two 11-year-old kids, Milana and Sasha, who were wounded during the shelling of Mariupol, sit in a bed in the children's ward of the hospital in Zaporizhzhia, Ukra