The United States and South Korea began major air exercises on Monday, involving 130 warplanes from both countries to simulate 24-hour wartime operations. The annual drills, called Vigilant Defence, will run until Friday, featuring variants of the F-35 stealth fighter from both the United States and South Korea, among other aircraft, South Korea's Air Force said. br br #US #SouthKorea #NorthKorea #JointAirDrills #USSouthKoreaAirDrills #VigilantDefence #AnnualDrills #Russia #NorthKoreaArmsSupply br br ~PR.152~HT.98~ED.103~GR.