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 ...

Lockheed Martin has been awarded a contract to provide support and production services for the Trident missile system. Lockheed Martin, Rotary and Mission Systems, has been awarded a contract to ...

The United States Navy’s Ohio-class ballistic missile submarine can carry 24 UGM-133 Trident II D5 submarine launched ballistic missiles that can each carry as many as twelve W88 475 kiloton ...

An Ohio-class submersible ship ballistic nuclear-powered submarine (SSBN) of the US Navy test fired four UGM-133A Trident II D5 Life Extension (D5LE) missiles to demonstrate readiness of America's sea ...

Scrapping the Trident nuclear deterrent would be "irresponsible folly", a group of former defence and security chiefs have warned. The next government deciding against renewal would be "irrevocable", ...

Trident is a complete system of submarine-based nuclear missiles. It is based on four boats and at any time at least one of them is at sea, on patrol, somewhere in the world. One of the four ...

It would be "irresponsible folly" for the next Government not to renew Trident, a group of former defence and security chiefs have warned. A decision against renewal would be "irrevocable", they said ...

This article is brought to you by our exclusive subscriber partnership with our sister title USA Today, and has been written by our American colleagues. It does not necessarily reflect the view of The ...

Defence Secretary Michael Fallon has refused to confirm the Conservatives would vote with a minority Labour government to renew Trident. After his opposite number Vernon Coaker affirmed Labour's ...