J. Scott Applewhite/AP Secretary of State John Kerry. (J. Scott Applewhite/AP)

From hack to flack… Our former colleague, Doug Frantz, who was the Post’s national security editor, is the new assistant secretary for public affairs at the State Department.

The White House on Tuesday announced the pick, calling Frantz and several other appointees “fine public servants.”

Per President Obama: “Our nation will be well-served by these individuals, and I look forward to working with them in the months and years to come.”

It won’t be Frantz’s first time toiling under Secretary of State John Kerry. Before joining the Post — but after a long and illustrious journalism career, including stints at the Chicago Tribune, the LA Times and the New York Times — Frantz was deputy staff director and chief investigator for the Senate Foreign Relations Committee when Kerry held the gavel.

And with Kerry on the hotseat this week, testifying before Congress on the couldn’t-be-hotter topic of a possible U.S. military strike on Syria, it looks like Frantz won’t have a slow start to the job.