A nuclear submarine of either the United States or the Royal UK Navy likely test fired a UGM-133 Trident II D5 Submarine-Launched Ballistic Missile (SLBM) in the North Atlantic on September 21, 2025.
Summary and Key Points: The UK’s Vanguard-class submarines, introduced in the 1990s, are the backbone of the Royal Navy’s nuclear deterrent force. -These submarines carry the UGM-133 Trident II ...
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