A video showing a boy, claiming to be eight years old, brandishing a rifle while saying that his father is a "defender of the Ukrainian city of Mariupol" is circulating online amid the ongoing attempts to evacuate civlians from the city.The southeast Ukrainian city currently has a major concentration of troops belonging to the Azov Regiment –a neo-Nazi volunteer unit of the Ukrainian National Guard.In the footage, the youngster calls on all Ukrainians and Europeans to help defend the city. He urges that weapons be sent to Ukraine and the sky be closedThe kid is filmed standing against a banner...