KHERSON: Dr Oleh Duda, a cancer surgeon at a hospital in Lviv, Ukraine, was in the middle of a complicated, dangerous surgery when he heard explosions nearby. Moments later, the lights went out. Duda had no choice but to keep working with only a headlamp for light. The lights came back when a generator kicked in three minutes later,” Duda said. The devastating strikes, has disrupted the health care system of the country.