N. Korea issues nuclear warning

N. Korea's defense minister Kang Sun-namissued a warning in a statement that a deployment of U.S. nuclear-capable ballistic missile submarine in S. Korea may fall under the conditions of its use of nuclear arms.

In a statement issued on Thursday night, Kang blasted the U.S. Navy's nuclear-capable ballistic missile submarine USS Kentucky's visit to Busan Port. The statement called the move "the most blatant and direct nuclear threat" and said that military clashes on the Korean Peninsula have become a reality. Kang added that the deployment of U.S. strategic assets may fall under the conditions of nuclear weapons use.

The submarine, the USS Kentucky made a port call in South Korea on Tuesday, becoming the first such vessel to do so in 42 years.