Are May and Foster both on the way out?

One of the curiosities of British politics at the moment is that the two party leaders positioned nearest the exit door are running the government. Yet, rather than basking in the glory of high office, Theresa May and Arlene Foster find themselves locked in a symmetrical struggle to retain their jobs.

Will Foster pull the plug on the confidence and supply arrangement with the Tories, which might turf May out of power? Can ...