Nuclear fears

I FEAR David Purves (Letters, 6 July) does not understand the logic of a nuclear deterrent. The point of their existence is, paradoxically, that they never be used.

In this respect the UK's deterrent has been successful for more than 60 years. In preventing western Europe being overrun by the belligerent communist East in the post-Second World War period the deterrent he abhors gives critics the freedom and right to say what they wish in 2010.

Does he think that had Britain instead of Russia been invaded in 1941, and Scotland had been "free'', Hitler would have ordered his troops to stop at the Border for fear of upsetting friendly wee Scotland?

Alexander McKAY

New Cut Rigg

Edinburgh