Doctors Without Borders flew no internationally-recognized medical insignia on the rooftop of its Kunduz, Afghanistan, hospital that was mistakenly attacked October 3 by U.S. military aircraft, according to a Daily Caller News Foundation investigation.The relief group – also known as Medecins Sans Frontiers – failed to display a Red Cross, Red Crescent or Red Lion and Sun, the universally recognized medical emblems since 1949 that identify buildings that must be protected to attacking aircraft during wartime under Article 38 of the Geneva Accords.“Doctors Without Borders marked the roof of the building in the week prior to the Oct. 3 airstrikes,”...