It's highly likely those 23 countries believe anything they're told, similar to many commentators in this thread.
Because unless we’re directly involved, we’re all believing something that someone has told us.
The difference is that you’re believing the line spun by a regime in whose own country journalists are routinely murdered, which has form for assassinating dissidents going back over a century and is guilty of both military and cyber attacks in very recent history.
I’d say if you would rather believe that bunch of thugs, you are misguided or possibly an idiot. Or both.