The UK’s nuclear deterrent has failed during the past two test fires of the Trident II D5 submarine-launched ballistic missile.

The Trident II D5LE has an unclassified range of over 7,500 miles and can reach speeds of up to Mach 24. Last week, a Navy ballistic missile submarine tested the US military’s nuclear deterrence ...

An unarmed Trident II D5 Life Extension missile launches from an Ohio-class ballistic missile submarine off the coast of Florida during a planned test event from Sept. 17-21. (U.S. Navy) The U.S. Navy ...

The U.S. Navy completed four scheduled flight tests of its nuclear-capable Trident II D5 Life Extension missiles last week. The launches took place off the coast of Florida between September 17 and ...