US envoy Sung Kim arrives in South Korea amid North’s anger over military drills

US President Joe Biden’s special envoy for North Korea on Saturday arrived in South Korea for discussions over stalled nuclear diplomacy with Pyongyang.Sung Kim’s visit comes amid fresh tensions over ongoing US-South Korean military exercises, which the North has described as an invasion rehearsal and led to it threatening unspecified countermeasures that would leave the allies facing a “security crisis”.Kim will meet his South Korean counterpart Noh Kyu-duk on Monday and also plans to hold…