South Korea has airlifted 200 tons of tangerines to North Korea in return for shipments of pine mushrooms by the North in September, officials said Monday. South Korean military planes flew to Pyongyang, North Korea’s capital, on Sunday and Monday to deliver the fruit from the southern island of Jeju, according to Seoul’s Defense Ministry. The airlifts are another sign that liberal South Korean President Moon Jae-in is moving ahead with efforts to improve ties with North Korea despite stalemated global diplomacy on the North’s nuclear programme. After a summit meeting between the Koreas in Pyongyang in September, North Korea gave South Korea two tons of pine mushrooms as a goodwill gesture. Pine mushrooms are white and brown fungi that are considered a healthy delicacy in both Koreas and other Asian countries. They are one of the North’s most prized regional products, and the country shipped them to South Korea in 2000 and 2007 after previous summit talks. After their summit, North Korean leader Kim Jong Un also gave Moon a gift of two dogs, both white Pungsans. On Monday, Mr Moon tweeted that one of the dogs, named Gomi, gave birth to six healthy puppies last Friday “Six dogs…