Boris Johnson's summer is over. The week that could determine how long he remains prime minister — and how or whether Britain leaves the European Union — is about to begin.
The rules of the U.K.'s unwritten constitution are being stretched to the limit, with new precedents being set and cries of foul play arising nearly every day. Johnson's goal is to stay in power by uniting hard-line Brexit supporters while opponents remain divided.
It remains to be seen whether he has overplayed his hand.