The Royal Navy's entire available fleet of hunter-killer submarines is stuck in port unable to sail – leaving Britain at risk from Vladimir Putin's Russia. In a fresh humiliation for Britain's Armed Forces, all five of its Astute class submarines are currently laid up awaiting maintenance and other repair work. Military experts have also warned that the Navy's lack of available nuclear-powered attack submarines – which carry up to 38 Spearfish torpedoes and a battery of Tomahawk missiles – leaves the UK's sub-sea internet and power cables dangerously vulnerable to sabotage by the Kremlin. The subs also play a critical...