SEONGNAM, South Korea (Reuters) - South Korea should redouble its efforts to become a global defence industry leader, President Moon Jae-in told a military expo in the outskirts of Seoul on Wednesday, after landing at the site in an air force fighter jet. Clad in a flight suit, Moon arrived at the biennial Seoul International Aerospace & Defense Exhibition in the back seat of an FA-50 jet fighter, South Korea's first indigenous supersonic aircraft and a major defence export... ...At least 440 companies from 28 countries are participating in what organisers said was the largest ADEX ever. About 300 government,...