I support Trident and want it renewed. I think it has kept us safe in the past, keeps us safe now and will do so in the future despite the change in threats faced by our country.
Trident is in use everyday. Somewhere out there in the dark ocean is one of our submarines armed with enough destructive force to destroy any country who tries to destroy us. Why would we give that up that security knowing these weapons still exist? Why would we make our country and our people less safe?
Trident is there to create room for a pause, for a time to think and to deter a nuclear attack. That is based on a belief that the missiles could and should — indeed must — be used under certain circumstances and that any attack on our country with NBC weapons will be met with a sure a certain destruction of the the attacker, his regime and all of his people. That must create doubt in the minds of a would be aggressor from Russia via North Korea to ISIL.
I wish we could uninvent these weapons and somehow prevent humanity from ever inventing them, but we cant. These weapons exists and they are not all controlled by sensible counties like ours. They are already held by people like North Korea and more rouge states like ISIL/ISIS/TBC would love to acquire the technology. Without out our shield I fear they might use thier weapons knowing we could not respond in kind. What better way to decimate the capitals of the infidel and apostate and secure your view of the world/
In closing down our deterrent we open ourselves up to the prospect of another country deciding our destiny at some point in the future. Without these weapons we may be subject to blackmail, threats or defeat by nations that do posses them.
Consider also that our deterrent makes us the second centre of decision in a nuclear NATO which secures the "western" deterrent by ensuring missiles are spread out and under independent command. As such many of the other countries in NATO much trumped as living free of such weapons actually rely on us for thier security.
Yes the logic behind these weapons is insane and yes they are ruinously expensive but submarine based weapons are the best way, perhaps the only way, of maintaining a secure, independent, 24 hour a day nuclear deterrent. Finding a bomber base is easy. Finding an almost silent Vanguard-class submarine in the almost endless ocean is almost impossible.