Under what circumstances would we ever use Trident missiles?
I'm more than happy to spend whatever is necessary to ensure that if someone attacks the UK we can defend ourselves - but I can't imagine the circumstances where we would fire a nuclear missile? Even if we get the 4 minute warning, and Glasgow is about to be hit, why would we fire one back at North Korea or wherever - just for spite? - we would never ever do it? Would we? What would be the point?
OK, so the bombs dropped in '45 were arguably a very effective way of shortening WW2 and saving allied lives, but there is no longer a big enemy all in one place that we could/would target. The 'enemy' (of the free world) has changed.
Assuming it costs half of the £25 billion to maintain a defence-only capability (ability to shoot down incoming missiles that sort of thing) - isn't there a spare £12/13 billion that could be put to better use? - investment in renewable technology/energy efficiency/massive investment in public transport?
Where am I going wrong in my thinking?








