On what I believe to be a related issue...
Boris Johnson has suddenly pulled out of the race for Conservative Party leader. Depending on whether or not there's a snap election, this position would also mean automatically becoming prime minister.
Why did he suddenly quit? Not a few are angry with him and paint a picture in which he (with Farage) led the charge, got the UK into this terrible mess and is now abandoning ship just as things are getting serious. The idea that Gove's entry was a betrayal and therefore he's just backing down doesn't quite add up.
Is it cowardice or something else? The Establishment is stirred at present and there's a major shake-up going on. Did Johnson irritate the unofficial powers that be? I'm sure Washington does not look favourably on him. He just greatly weakened their ability to exert influence within Europe. Washington also fears the weakening of NATO, though the recent Istanbul attack will certainly help solidify European unity and resolve.
There's an interesting story here but it may take some time for it to really come out.