In February 2019 in Hanoi, a second summit between Kim and Trump broke down without an agreement. On June 30, 2019, President Trump met with Kim Jong-un along with Moon Jae-in at the DMZ, making him the first sitting US President to enter North Korea. Talks in Stockholm began on 5 October 2019 between US and North Korean negotiating teams, but broke down after one day. In June 2020, North Korea demolished the inter-Korean joint liaison office in Kaesong.