Who are Robert Mueller and Rod Rosenstein? A closer look at two of the players at the center of the investigation into ties between President Trump’s campaign and Russian officials. Guests: Matt Apuzzo, who covers the F.B.I. for The Times; Glenn Thrush, who covers the White House; Megan Brown, a lawyer in Maryland who first met Mr. Rosenstein back in 2000 when he hired her for her first law internship. For more information on today’s episode, visit http://nyti.ms/2ry4DUZ.

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