What we’ve learned about President Trump’s Oval Office meeting with top Russian officials the day after he fired James Comey, the F.B.I. director investigating his campaign’s ties to Russia. Plus: how efforts by the U.S. government to protect against a cyberattack may have enabled one. Guests: Matthew Rosenberg, who covers intelligence and national security; David E. Sanger, the chief Washington correspondent for The Times. For more information on today’s episode, visit http://nyti.ms/2pVBUrl.