Egypt inaugurates the ‘Octagon’, a mega military HQ larger than the Pentagon

Egypt has inaugurated a new armed forces headquarters, which observers say is the largest in the world, with an elaborate ceremony and a rare appearance from the president and former general Abdel-Fattah el-Sisi in military uniform. The Octagon, as the complex is being called, consists of eight buildings each with an eight-sided floor plan in an area of around 90 sq km (34.7 square miles), the siz