CBS News’s head of standards and practices, Claudia Milne, announced her departure from the network Thursday morning, marking the first exit of a major executive since Bari Weiss became editor in chief. Milne did not specify her reason for leaving, but said in a farewell message to colleagues that her exit came amid “complicated times” for the company, the industry, and the country. “I believe our role as journalists is to hold the powerful to account,” Milne said in a copy of the note obtained