North Korean leader Kim Jong Un highlighted the Air Force's role in exercising nuclear war deterrence as he celebrated the Air Force's 80th anniversary along with his young daughter, state media reported on Sunday.Photos released by North Korea's Rodong Sinmun newspaper showed Kim observing what appeared to be unmanned aircraft and mobile missile launchers among others.North Korea has launched mass production of small, short-range First Person View (FPV) drones, as well as larger medium-range