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https://www.wsj.com/articles/north-korea-tests-new-rocket-engine-to-enable-long-range-missile-strikes-11671179407
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SEOUL—North Korea tested a
solid-fuel rocket engine that is central to quicker deployment of its long-range missiles, delivering on a key weapons goal for leader Kim Jong Un.
Missiles typically use either liquid or solid fuels. With liquid fuels, the process to launch a long-range missile can take hours, making any potential strike more easily detectable. But with solid fuel, the propellants can be stored inside a missile, allowing the weapon to be stashed in a more covert place and launched with more surprise.
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Copyright ©2023 Dow Jones & Company, Inc. All Rights Reserved
This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple copies, please contact Dow Jones Reprints at 1-800-843-0008 or visit www.djreprints.com.