An attack on a NATO country would invoke a response along treaty lines - which would put the UK in direct line of fire. I'm not suggesting it'll happen but it does demonstrate things can turn awfully nasty in a heart beat.Hmm hardly clear and present though was it, nor a direct threat to the UK. Neither to be honest would a UK deterrent have any appreciable effect on the outcome of that situation should it ever turn hot in the future.
That scenario also leads to the question of how "independent" our deterrent actually is. Could we even physically launch in retaliation if Washington was not in agreement?
To Mr Conservative
Trying to maintain a status quo in a world that is rapidly changing is a futile effort and will generally take you at great fiscal and indeed diplomatic cost to an inevitable climbdown in the future that could have been carried at little cost or damage far earlier. Real power will not be denied as that is the nature of power. If too many members of the UNSCPM are no longer truly relevant, it will simply devalue the institution to that of an old buffers club, while real power makes its own arrangements, elsewhere.
Cast your mind back to the Oman crisis back in the early 70's in which we covertly engineered a a coup then stabilised the country around the chosen successor. Not long after this, Iran donated both aircraft and assistance and we worked alongside Iran in building up a decent airforce. Fast forward to a few short years later and we're looking at Iranians burning flags and chanting a lot.. It's just an example of how pear-shaped things can go in a short span of time.
It would take a *long* time to rebuild a deterrent and a short time to regret losing it - what I'm saying is, the argument that we don't need a deterrent right this second is not compelling.
In terms of independence of deterrence, yes, at any time we can launch without reference or consent from the US. We do not have the capability to maintain the missiles. The missiles are leased from the US, and they are stored on US soil (mainly because it's cheaper for us - we tap into existing facilities for storage, maintenance and refit)
The warheads are of a UK design, with, it's alleged, strong US input and are not tied into the PAL system that the US uses. In short, if we have valid missiles and warheads at sea, the PM can pick up the phone and deliver instant sunshine to most of the globe without asking nicely first.
A further consequence of ditching the deterrent would be to greatly increase the costs of a replacement for Astute - we're allegedly pretty close to the wind with 8 attack and 4 boomers, dropping to 8 attack boats would make that capability very expensive by comparison.
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