I doubt Kim Jong-un is very concerned about this when he knows there is almost zero chance the ROK President is willing to execute such a preemptive strike. This report seems more for domestic consumption to show the ROK public the government is “doing something”:
South Korea’s defense minister is publicly boasting that it will create a new “decapitation unit” called the Spartan 3000 with the express intent of taking out North Korean leadership, The New York Times reports.
The brigade-sized unit of between 2,000 and 4,000 soldiers will be established by year’s end, The Times reported the defense minister, Song Young-moo, as saying, adding that the military was already “retooling” helicopters and transporting planes to be able to penetrate North Korean airspace at night.
It’s out of the ordinary for a senior government leader to publicly say they are working on a plan to assassinate a foreign head of state. But there’s an interesting reason behind it: The South is trying to freak out its northern neighbor and get it to the negotiating table instead of further developing nuclear weapons.
“The best deterrence we can have, next to having our own nukes, is to make Kim Jong Un fear for his life,” retired South Korean Lt. Gen. Shin Won-sik told The Times. [Business Insider]
You can read more at the link.