After trying and failing to withdraw Britain from the European Union, Theresa May will resign this week as the country’s prime minister. Here’s how the man expected to succeed her, Boris Johnson, made Brexit — and how Brexit may soon make him prime minister. Guest: Sarah Lyall, a writer at large for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily.

Background reading:

• Mr. Johnson has become one of the great escape artists of British politics.
• Some of Mr. Johnson’s family members, once staunch opponents of Brexit, have had to perform a complicated political jujitsu around his candidacy for prime minister.
• Prime Minister Theresa May is scheduled to step down on Wednesday. Only 160,000 Conservative Party members can vote for the next leader, sidelining 99 percent of registered voters.

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