Aleksandr Zadov recalls the last time war forced him out of his home in Donetsk. The year was 1941, and Nazi troops were occupying the eastern Ukrainian city. He and his parents escaped under the cover of darkness to Kazakhstan. "We lived in savage, barbaric conditions. But we survived and came back," the 77-year-old says. He reaches out to hold his wife Bella's hand. "I would never have guessed that at our age we would have to deal with this again."