I am sorry the Labour Party Conference rejected the call for a debate about Trident. It was probably too soon to bring up such a controversial subject, but it begs the question: when will we have an intelligent, rational and dispassionate argument about nuclear defence?

Politics in Britain is locked into a morbid fear that abandoning Trident means automatic electoral defeat. This may have been true in the past, not least because of the lack of proper debate, but if we continue to constantly look over our shoulders, we will never move on.

Trident is a vexed question not least because of our relationship with the US and our imperial past. We cannot let go of history, a sentimental attachment to a foreign power with whom we share a common language, but not necessarily common aims, and delusions about our place in the modern, post-imperial world. We have not yet learned to adjust to our new role in the 21st century.

The pre-eminent question is: what is Trident for? Is it defence or is it prestige? If defence, then we have to ask ourselves in what circumstances we would use this weapon. Only a madman would use this weapon against us offensively, in which case why should he or she be worried about the consequences? To use Trident in these circumstances would be in retaliation, not defence, an act of vengeance not protection.

If it is prestige, it is worth remembering that Trident is essentially American technology, locking us further into dependence on a foreign power. Trident feeds the illusion, too, that we are still a great world power. Great we still are, culturally, even politically, but we should stop thinking that Britain rules the waves, land or skies.

It is not weapons that make us great but our values; not least, at a time when we are being told quite rightly that we must live within our means, how do we justify the exorbitant expense of maintaining our nuclear capability, at the expense of vital public expenditure and investment?

Trident is the elephant in the room.

Trevor Rigg,

16 Greenbank Gardens,

Edinburgh.