North Korea warns of "armed force conflict" after nuclear-powered U.S. submarine docks in South Korea
The nuclear-powered USS Alexandria is a 360-foot fast-attack submarine equipped with Tomahawk missiles and MK48 torpedoes.
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K9 Thunder By Samsung: A Closer Look At South Korea's Artillery Power
Read more: Weapons That Are Too Dangerous For War ... from South Korea at a cost of $920 million. A quick breakdown of that deal puts the per-unit cost of Samsung's self-propelled K9 Thunder ...