Korean War armistice (1951-1953)
Negotiations at Panmunjom began in July 1951 but dragged on for two years while fighting continued along the 38th parallel. The armistice was finally signed on July 27, 1953, freezing the front line where it stood.
The armistice ended active combat but left the Korean Peninsula divided.
No peace treaty was ever signed; the armistice remains in effect today.
Shows how prolonged negotiations can run alongside active combat, with the front line becoming the de facto border.
