There are questions on whether North Korea has acquired the technology to shield warheads from the high-temperature, high-stress environment of atmospheric reentry. Many foreign analysts say North Korea also must have improved altitude control and guidance systems for missiles. They say North Korea needs an ability to place multiple warheads on a single missile to defeat its rivals’ missile defenses. All of North Korea’s known ICBM tests, including Thursday’s, have been performed on steep angles to avoid neighboring countries. North Korea’s reported troop dispatch highlights the expanding military cooperation between North Korea and Russia.

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Persons: ” KCNA, Kim Jong Un, ’, Kim, “, Lee Sung Joon Organizations: North, Thursday, Korean Central News Agency, “ matchless, Observers, U.S Locations: SEOUL, South Korea, North Korea, U.S, North, Korea, Korean, Russia, Ukraine