Joint Security Area

The Joint Security Area (JSA), also called Panmunjom, is the only portion of the Korean Demilitarized Zone (DMZ) where forces from North Korea and the United Nations Command (UNC) — which includes South Korean and U.S. personnel — stand face-to-face. It sits roughly 53 km north of Seoul and was established following the signing of the Korean Armistice Agreement on 27 July 1953, which paused but did not end the Korean War.

The JSA was originally created as a venue for the Military Armistice Commission to oversee implementation of the armistice. Several pale-blue conference huts straddle the Military Demarcation Line (MDL) that bisects the area; inside these buildings, delegates can technically cross between the two Koreas. For decades, personnel from both sides could move freely throughout the JSA, but after the "axe murder incident" of 18 August 1976 — in which two U.S. Army officers were killed by North Korean soldiers during a tree-trimming dispute — the MDL was marked on the ground and movement was restricted to each side's half.

The JSA has been the stage for major diplomatic moments. It hosted the inter-Korean summit between Moon Jae-in and Kim Jong Un on 27 April 2018, which produced the Panmunjom Declaration, and the impromptu meeting of Donald Trump, Kim Jong Un, and Moon Jae-in on 30 June 2019, when Trump briefly stepped across the MDL.

The area has also seen high-profile defections, including a dramatic dash south by a North Korean soldier in November 2017 and the unauthorized crossing north by U.S. Army Private Travis King in July 2023 (he was returned to U.S. custody in September 2023). Security at the JSA is governed jointly under the UNC, and tours from the southern side are periodically suspended during periods of heightened tension.