North Korea on Friday announced it had built a "tactical nuclear attack submarine" as part of its effort to strengthen its naval force, the state news agency KCNA reported.North Korean leader Kim Jong Un presided over the unveiling ceremony on Wednesday, saying the new sub was part of a "push forward with the nuclear weaponization of the Navy in the future", according to KCNA.
The launching of submarine No. 841, named the Hero Kim Kun Ok, "heralded the beginning of a new chapter for bolstering u
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