Thinking outside the box lets not forget that 'blue water' could be an achiles heel. Given a willingness to convert civilian ships to carry/deliver all sorts of nasties and given that it is not impossible to convert 'at sea' the size of any future policing navy is likely to expand.
The thought of the number of available empty holds is a little scarey particularly given a legal limitation on 'inspection' on the high seas.
Factor in also that global warming promises to open the north-east passage and ''every tramp steamer,'' it has been said, is a potential risk.
