SEOUL, - US Secretary of State Mike Pompeo said on Sunday he met North Korean leader Kim Jong Un during his trip to Pyongyang, aimed at breaking a stalemate in nuclear negotiations between the two countries. Shortly after arriving in South Korea following the visit, Pompeo posted a photo of himself walking along with Kim on Twitter, saying: 'Had a good trip to #Pyongyang to meet with Chairman Kim. We continue to make progress on agreements made at Singapore Summit. Thanks for hosting me and my team @StateDept.'