Originally Posted by Stuff
Ask yourself who would attack us knowing that Nuclear destruction is the inevitable result and you'll find out why we have a deterrent.
Not 'the inevitable', just 'a possible'. But that is all it needs to be for deterrence to work. Indeed I would argue that as long as Trident exists, a Corbyn government would benefit from a small degree of nuclear deterrence. He could change his position in the blink of an eye; unlikely maybe, but such are the calculations that a putative attacker would have to make.
racedo - Suggest you listen to Gen Houghton's comments online, he explains precisely why not using the deterrent is the desired outcome of possessing it.