Andres Kudacki / AP"Looking forward to meeting with Kim Yong Chol in New York to discuss @Potus potential summit with Chairman Kim. We are committed to the complete, verifiable, and irreversible denuclearization of the Korean Peninsula @StateDept," Pompeo said in a Twitter post. She said that a US delegation, led by US veteran diplomat Sung Kim, met with the DPRK officials at the Demilitarized Zone on Wednesday, when a US advance team also met with a DPRK team in Singapore. "Obviously, the US and North Korea have very - were very far apart when we were talking about denuclearization," Terry said. South Korean Unification Minister Cho Myoung-gyon also said on Wednesday that there remained a big difference between Pyongyang and Washington over how to make the Korean Peninsula nuclear-free.