North Korea reportedly launched a ballistic missile off its eastern coast Monday after vowing retaliation over a U.S. military drill with South Korea and Japan.North Korea reportedly launched a ballistic missile off its eastern coast Monday after vowing retaliation over a U.S. military drill with South Korea and Japan.Read More09b7132c-a71b-5c2e-a354-588f804477c7, fox-news/world/conflicts/north-korea, fox-news/topic/associated-press, fox-news/world/world-regions/south-korea, fox-news/world/world-regions/japan, fox-news/world/world-regions/asia, fox-news/world/conflicts, fox-news/politics/defense, fnc, fox-news/world, article, Associated PressFOX News : World