North Korea's submarine No. 841 Hero Kim Kun Ok is capable of launching ballistic and cruise missiles armed with nuclear warheads.

The influential sister of North Korean leader Kim Jong Un rebuffed overtures by South Korea’s new liberal government, saying Monday that its “blind trust” in the country's alliance with the U.S. and hostility toward North Korea make it no different from its conservative predecessor.

Since his election, South Korean President Lee Jae Myung has tried reverse the hardline stance of his predecessor toward Pyongyang.