I have a theory. It’s probably not correct but I’m moonlighting as comment editor this week and there’s no time to check. The idea is that all prime ministers elevated from one of the great offices of state want to keep running that department from Number 10.
So Boris Johnson tried to be his own foreign secretary, Theresa May her own home secretary and Gordon Brown his own chancellor. Liz Truss is, as ever, uncategorisable. Rishi Sunak, for his part, gives the impression of a man who enjoys nothing less than retiring to the upstairs flat with a can of coke and a Treasury red book, rather than obsessing over foreign affairs.
