There never has been and never will be a final conclusive verdict on the meaning of historical events that draws a line under them. Can't be done.

It's no different in that from anything else in our lives. Why should it be?

To some extent the actual facts of what happened can be provisionally established, but the reasons why they happened, that's another matter. And so is the selection of which facts and which speculations the person telling the story selects. History isn't a science. (And science also is provisional in all its findings.)

It's like imagining you could come up with a definitive account of what Shakedpeare was about in writing Hamlet. Even if you could assemble a definitive text, which of course you can't, that would just be the beginning of an endless journey.

Enjoy the trip, but don't expect to arrive at a final destination.