Standing next to President Vladimir V. Putin at the close of their summit meeting, President Trump challenged the conclusion of his own intelligence agencies: that Russia interfered in the 2016 presidential election. “They think it’s Russia,” Mr. Trump said. “I don’t see any reason why it would be.” Guest: Julie Hirschfeld Davis, a New York Times correspondent who reported on the meeting from Helsinki, Finland. For more information on today’s episode, visit nytimes.com/thedaily.