This could be nothing, or perhaps others have already noticed, but here’s the news from September:
According to the attendees, Bolton also declared that negotiations with North Korea and Iran were “doomed to failure.”
The hawkish national security advisor reportedly griped about Trump calling off a planned military strike against Iran “at the very last minute” in June after Fox News host Tucker Carlson advised him against the strike. (emphasis mine)
I’m assuming this was a reference to Soleimani.
If so, I’d say it bolsters the argument that Trump assassinated Soleimani in an attempt to buy Bolton’s silence. How’s that for loyalty? He refused the House’s invitation. It appears he has also refused to keep silent. Book deal before party before country.