The Inter-Korean Liaison Office grew from the Panmunjom Declaration of April 27, 2018, when South Korean President Moon Jae-in and North Korean leader Kim Jong Un met at the Joint Security Area and pledged to work toward peace. Among the declaration's commitments was the establishment of a joint liaison office in the Kaesong Industrial Region, just north of the DMZ. The office opened on September 14, 2018, staffed by officials from both governments. For the first time, North and South Korean bureaucrats worked in the same building, maintaining a hotline and holding regular meetings. The office represented something rare on the Korean peninsula: a functioning institution of inter-Korean cooperation, housed in physical space rather than existing only in the language of communiques.

The catalyst for the bombing was not a military provocation or a diplomatic breakdown in the traditional sense. It was paper. Groups of North Korean defectors living in South Korea had for years launched balloons carrying anti-regime leaflets, pamphlets, and USB drives loaded with South Korean media across the border. North Korea considered this an act of hostility and demanded that South Korea's government criminalize the practice. When the COVID-19 pandemic forced the liaison office to close on January 30, 2020, and South Korean staff departed, the leaflet campaigns continued. Kim Yo Jong, the influential sister of Kim Jong Un, issued increasingly sharp warnings through state media. On June 4, she called the defectors "human scum" and threatened consequences. On June 9, North Korea severed all communication lines with the South. One week later, the building was gone.

The explosion on June 16 was captured by South Korean surveillance cameras and satellite imagery. The four-story liaison office collapsed entirely, along with adjacent structures in the Kaesong Industrial Region complex. No South Korean staff were present -- the office had been closed since January due to the pandemic. The South Korean government confirmed the destruction through intelligence monitoring and expressed strong regret, calling the act a violation of inter-Korean agreements. Yet the response was notably measured. Seoul did not retaliate militarily or escalate rhetoric. Some critics argued the restraint was necessary to preserve the possibility of future dialogue; others saw it as weakness in the face of deliberate provocation.

In December 2020, six months after the bombing, South Korea's National Assembly passed a law penalizing citizens who send anti-North Korean material across the border -- effectively granting one of Pyongyang's demands after the fact. The law drew international criticism from human rights organizations who argued it restricted free expression to appease a dictatorship. Domestically, opinion was divided. The liaison office itself has not been rebuilt. Its destruction left a vacuum in inter-Korean communication at a time when dialogue was already strained by the collapse of denuclearization talks between North Korea and the United States. The Kaesong complex, which once hosted 123 South Korean companies employing 53,000 North Korean workers, sits largely idle. In October 2024, North Korea severed the last physical connections by digging trenches across roads and rail lines leading south. The building designed to keep the conversation going is now rubble, and the conversation has stopped.