More than half a million people have fled Ukraine since Russian forces invaded the country last week, according to the United Nations. Among these is Piroska Baksa, an 80-year-old grandmother from the village of Chomonyn who walked for seven hours to escape the fighting. Born in 1942, she hiked across the Hungarian border along with her daughter and 14-year-old granddaughter on Monday. Here's her story. | Euronews Travel