Nuclear Submarines to stay in UK?

Tony Blair stated that it would be dangerous for Britain to stop having a contingent of nuclear weapons, this would not reflect a Cold War way of thought he says but rather the facing of the reality that nuclear weapons can be obtained by many forces today. This indicates that the new school of thought is that we are surrounded by nuclear and/or other catastrophic weapons aka Biological and chemical weapons. That everywhere one of those weapons could wait and that the only protection against that threat are more of those weapons. That then in turn are placed in 'strategic' positions which allow us to shoot anyone who might be responsible for the devastating strike against us. Further this school of thought does not indicate action but reaction, that the strike can and will happen, and that all we can do is to be able to destroy anyone who might be responsible.

A Link to a related article
UK nuclear weapons plan unveiled