Tensions between North Korea and South Korea have escalated over the denuclearization talks between Pyongyang and the Trump administration. The joint liaison office based in North Korea has been blown up:
North Korea blew up a liaison office building it operates with South Korea, officials in Seoul said Tuesday, as tensions on the Korean Peninsula escalated amid stalled denuclearization talks between Pyongyang and the Trump administration.
Seoul’s Unification Ministry said it was still trying to determine precisely what happened. But it confirmed that the joint liaison office, opened in 2018 to foster better relations between the rival Koreas, was destroyed by North Korea at the border town of Kaesong.
The targeting of the building by North Korea comes as Pyongyang has repeatedly warned Seoul that it needs to prevent defectors and activists from sending anti-North Korea propaganda leaflets across the border via balloons.
North Korea said it cut all communications with South Korea. 
This follows a statement from North Korea last friday saying that it was formally abandoning attempts to continue diplomatic relations with the White House.