U.S. intelligence officials have concluded that the Russian government is attempting to interfere in the 2020 presidential race — but it is doing so by supporting two very different candidates. So why is Russia rooting for both President Trump and Senator Bernie Sanders? Guest: David E. Sanger, a national security correspondent and a senior writer at The New York Times. For more information on today’s episode, visit nytimes.com/thedaily.  Background reading: Mr. Sanders was briefed on potential interference, and when details of the attempts emerged, he ratcheted up his attacks on Russia, warning President Vladimir V. Putin to stay out of the presidential election.Intelligence officials warned House lawmakers last week that Russia was interfering in the 2020 campaign to try to get the president re-elected. Mr. Trump was angry the intelligence briefing was held at all.What exactly do intelligence officials mean by “interference”? We don’t know, and officials can’t seem to agree on the scope of the meddling.