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 ...

Add Yahoo as a preferred source to see more of our stories on Google. What is immediately clear from the imagery is just how rough the sub looks. The surface of its hull is covered in a brownish-green ...

LONDON — The U.K. likely remains months away from granting initial approval to replace its Vanguard-class ballistic missile submarine. Nuclear deterrent is one area that is having to be carefully ...