The U.S. Navy’s Subsea Rare Earth Vulnerability

The Columbia-class ballistic missile submarine is the next generation of American nuclear deterrence. Twelve of these boats will replace the aging Ohio-class fleet, entering service over the 2030s and 2040s, each carrying 16 Trident IIs and driven by a ghost-quiet electric motor that renders them acoustically invisible to any adversary. What makes all of that possible — the propulsion, the stealth

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