"Any Nuclear Attack Would Bring Down the Kim Jong Un Regime," South Korea warns.

Pyongyang had stated that the deployment of a US nuclear-capable submarine and other strategic assets in the region could satisfy the requirements for the use of nuclear weapons.

Yonhap News Agency reported on Friday that South Korea has warned North Korea that any nuclear attack from their side would spell the "end" of the Kim Jong Un-led regime.

Pyongyang had stated that the deployment of a US nuclear-capable su....