SEOUL, South Korea (AP) — North Korea fired an intercontinental ballistic missile that landed near Japanese waters Friday in its second major weapons test this month that showed a potential ability to launch nuclear strikes on all of the U.S. mainland.

While it's unclear whether North Korea possesses functioning nuclear-armed missiles, some experts say Friday’s launch involved its longest-range missile, which is still under development and is designed to carry multiple nuclear warheads to overcome U.S. missile defense systems.

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