SEOUL -- North Korea's latest ballistic-missile test may have come in response to the first port visit by a U.S. nuclear-powered aircraft carrier in South Korea in four years.
International relations
North Korea rattles saber as U.S. carrier arrives for drills with South
Ballistic missile fired for first time since June with sub-launched test looming
The USS Ronald Reagan arrives in Busan ahead of joint military drills with South Korea. (Photo by Junnosuke Kobara)
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