Egypt has prohibited its airlines from flying over the Iranian capital Tehran overnight. “All Egyptian airlines should avoid flights over Tehran,” a security notice from the civil aviation authority in Cairo read on Wednesday. Plans for flights over this area will be rejected, it said. The directive applies from 0100 GMT on Thursday for three hours. Such a notice from Egypt is “very unusual,” wrote the organization OPS Group, which informs its members about risks and changes in international air traffic. “It is possible that this is an indicator of an Iranian response to Israel, and in turn a …