OPLAN 5029
OPLAN 5029 is a proposed military operation plan by the United States and South Korea for dealing with "sudden change" in North Korea, such as a coup d'état, revolution, large scale defections, outflow of weapons of mass destruction, hostage situations involving South Koreans, or major natural disasters. While no permanent version of OPLAN 5029 is known to be in effect, South Korea has repeatedly stated it adheres to the current conceptual plan (CONPLAN 5029) and the United States has said it is preparing concrete plans for collapse scenarios.