Jeju Island's Vulnerable Defenses Against Hostile Nations in Times of Emergency

As of 2026, the population of Jeju is approximately 660,000.
The number of Chinese residents in Jeju is about 25,000.
There are many Chinese employees, whether they are legally or illegally employed.
Furthermore, the number of Chinese tourists utilizing the 30-day visa-free entry
is expected to reach 1.6 million as of 2025.
In the event of an emergency, up to 170,000 Chinese nationals could potentially gather on Jeju Island.
On the other hand, Jeju has no Army or Air Force; it only has the police, who are easy to compromise.
There are only 500 Marines, and only a portion of the 3rd Fleet Command, which is headquartered in Mokpo, is deployed there.
It would all be over if Jeju Airport were simply occupied.
In times of emergency, Jeju Island holds a truly critical position.