UK's 'toothless' rhetoric against Russia exposed as Britain's entire attack sub force goes missing?

A major question is being raised over Britain's naval readiness after reports claimed all operational Astute-class attack submarines are currently in port. The development comes as Russian submarine and naval activity near UK waters reportedly continues to increase. Former Royal Navy commanders have warned that the absence of a single operational hunter-killer submarine at sea could damage Britain's military credibility and deterrence posture. Astute-class submarines play a critical role in tracking Russian vessels, protecting the UK's nuclear deterrent and escorting aircraft carriers. Is Britain's underwater shield facing its biggest test in years?