Why do both kind of Bonds have the license to kill?

[Priyank]

"The bond market began by facilitating government borrowing. In a crisis, however, it can end up dictating government policy. So how did this 'Mr. Bond' become so much more powerful than the Mr. Bond created by Ian Fleming?"

Quote from my current read - "The Ascent of Money" by Niall Ferguson (my next read - "No Deadline For Love" by Manasi Vaidya")