South Korea warns North Korea it will be the end of their regime if they try to use Nuclear weapons

[JOE]

....thing is, couldnt NK wipe out the entire Korean peninsula (including themselves) with just 1 bomb? Korea seems rather small in land mass, not much larger than a US state or 2.

Or do they have plans to deploy them elsewhere such as Japan?

https://m-en.yna.co.kr/view/AEN20240714001400315

SEOUL, July 14 (Yonhap) -- South Korea warned on Sunday that North Korea will face the end of its regime if it attempts to use nuclear weapons.

"We sternly warn that there is no scenario in which North Korea's regime will survive after using nuclear weapons," Seoul's defense ministry said in a statement.

[Prof Emeritus at Fawk U]

Personally, I think we should announce a new policy shift in nuclear weapons in East Asia.  Namely, we let South Korea, Japan, and even Taiwan to build their own arsenal.  Beijing failed to stop NK from getting the bomb so now let it become their headache when the other nations develop their own nukes.