A test launch of the UK’s Trident nuclear missile has failed for the second time in a row, crashing back into the ocean almost immediately after being launched, a source has revealed. The launch was ...

LONDON — British Defense Secretary Grant Shapps and other top officials were on a Royal Navy nuclear submarine when the test-firing of a Trident II D5 nuclear missile failed last month. The misfire ...

What You Need to Know: The Royal Navy’s Vanguard-class ballistic missile submarines have been the cornerstone of the UK’s nuclear deterrent since the early 1990s. Comprising four vessels—HMS Vanguard, ...

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 ...

The kingdoms of the Trident Realm are proud and territorial, and can commit to violence with little provocation. The lord of any land-bound territory would be wise to treat their inlets and coasts ...

The British Royal Navy suffered a recent setback when a test of the Trident missile system failed and the missile crashed into the sea near its launch site. Reports say this incident has raised ...

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A nuclear-powered submarine from either the United States or the United Kingdom appears to have test-fired a UGM-133 Trident II D5 submarine-launched ballistic missile (SLBM) from Puerto Rico in the ...

LONDON, Feb 21 (Reuters) - Britain's Trident nuclear-deterrent system misfired during a test last month, sending a missile crashing into the ocean off the Florida coast near the submarine that ...