South Korea Ballistic Missile Range Guidelines
The guidelines were an agreement between South Korea and the United States, operating from 1979 to 2021, aiming to reduce missile proliferation in the region. It limited the range of South Korean weapons, so that nearby countries other than North Korea, particularly Japan, would not feel threatened by them, limiting their desire to build similar weapons.
Source: Wikipedia — South Korea Ballistic Missile Range Guidelines (CC BY-SA 4.0)