President Donald Trump says he may meet this week with conservative British politician Boris Johnson during his state visit to the United Kingdom, days after he suggested he’d support Johnson’s effort to replace Theresa May as prime minister.

Wading in again to his hosts’ domestic politics, Trump says of Johnson, “He’s a friend of mine,” adding he may also meet with another pro-Brexit politician, Nigel Farage, during his visit.

Trump is also firing back at London mayor Sadiq Khan, who called the U.S. leader a “global threat” ahead of his trip. He said he has no interest in meeting, saying, “No, I don’t think much of him.”

Trump adds, “He’s the twin” of New York City mayor Bill de Blasio, “except shorter.”

The agenda for Trump’s weeklong trip is both ceremonial and official: a state visit and an audience with Queen Elizabeth II in London, D-Day commemoration ceremonies on both sides of the English Channel and his first presidential visit to Ireland, with a stay at his coastal golf club.

Trump is to leave Washington on Sunday and arrive in London on Monday morning for a two-day stay.