At exactly 8am on Friday morning, Trump's former national security advisor, John Bolton, who left the administration on September 10, broke his twitter silence to announce that he is "Glad to be back on Twitter after more than two months" and added the cryptic: "For the backstory, stay tuned........"

As for Bolton's next tweet, it will likely announce the publication of his upcoming "tell-all" memoir, which is already in the works.

Bolton's tweet follows the testimony of Fiona Hill and Gordon Sondland, who has revived chatter about John Bolton appearing before the Intelligence Committee as part of the impeachment inquiry. But the reality of that actually happening is close to zero.

Committee member Rep. Peter Welch, D-Vt., told NBC News on Thursday that the only thing that "would inspire Bolton to talk is his $2 or $3 million book deal.