PM makes rare visit to nuclear-armed submarine to show UK’s strength – but Putin will notice a potential weakness

PM makes rare visit to nuclear-armed submarine to show UK’s strength – but Putin will notice a potential weakness

The prime minister boarded HMS Vanguard, one of the UK's nuclear-armed submarines, which had been at sea more than 200 days, amid issues with maintaining an ageing fleet while upholding the "continuous at-sea deterrence".