classify

The exact cause of death was “best classified as undetermined.”

They each fled the country after converting to Christianity from Islam, which Iran's Shariah law classifies apostasy punishable by death, and sought refuge in the U.S. to practice their newfound faith freely.

Officials also worry that confidential information could leak — not only taxpayers’ personal details, but classified data about intelligence or defense programs.

In a copy of the email obtained by the BBC, employees were asked to respond explaining their accomplishments from the past week in five bullet points - without disclosing classified information.

We asked for NATO's figures, but they said they were classified.