(Fox News) Two-thirds of North Korea's submarine fleet was reportedly on the move and off of Seoul's sonar this week despite an announcement by the two Koreas that they were ratcheting down the saber rattling that followed a land mine explosion in the demilitarized zone earlier this month.
More than 50 North Korean subs, believed to represent about 70 percent of Pyongyang's fleet — were still unaccounted for Wednesday in a potentially ominous development that a spokesman for South Korea's Defense Ministry called "unprecedented." Seoul and the U.S., which maintains a strong presence in South Korea, responded by increasing military surveillance.
"The number is nearly 10 times the normal level … we take the situation very seriously," Kim Min-seok, the defense ministry spokesman, said Tuesday.
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