If I am elected I promise to squander loads of your money on defence. I shall order 12 Trident subs all armed to the teeth with missiles. Ever seen a Trident sub? No? That is cos they are cunningly hidden. All we have to do is tell that Mr Putin that we have them and he will have to trust us

I shall also build (in Britain of course) ten squadrons of Stealth bombers undetectable to radar or the naked eye.
I will create 50000 plain clothed police who will wander undetectably around our towns and cities.
Plain clothes doctors and nurses will flood our hospitals.
Vote for me. You know it makes sense.
What other invisible things would you like?