A freelance reporter has been fighting a subpoena from the Trump administration seeking to force him to reveal his sources for a New York Times article about a failed top secret mission in North Korea, according to people familiar with the matter.

nyti.msJustice Dept. Subpoenas Times Freelancer in Effort to Identify SourcesA previously undisclosed subpoena, involving reporting on a failed SEAL Team 6 mission in North Korea, reflects the government’s expanding campaign to investigate leaks of secrets.