E.R. Campbell said:
So as I read pps 5,6 and 7 we need the F-35 because we will face a coalition of China and Russia in a shooting war in the next 35 years.
Maybe.
But unlikely for reasons upon which I have elaborated at length over the past few years: China has no strategic interests in a war against the West, it fact such a war makes no, zero, zilch strategic sense for China. China and Russia are more likely potential enemies than allies - they do not share many (any?) strategic interests, especially not viz a viz the West. China and Russia might go to war but if they do the chances are very, very good that it will be against one another.
So absent a China-Russia enemy coalition: why the F-35?