President Trump joked with then-White House press secretary Sarah Sanders that she would have to “go to North Korea and take one for the team” after the country’s leader, Kim Jong Un, winked at her in June 2018 during a summit in Singapore, according to a report Wednesday.

“Kim Jong Un hit on you,” Trump told Sanders as they were riding in the presidential limousine on the way to the airport. “He did. He f—ing hit on you.”

The exchange is included in Sanders’ memoir, “Speaking for Myself,” the Guardian...