I honestly didn't know how to rate this, but I opted for a ten for the following reason.
The stories from the ancient survivors are without a doubt heartbreaking. I won't list them here, there are so many and unbelievable that they are still alive approaching a hundred years old.
What frightens me is that the likes of Putin, Biden/Trump, Iran, China, North Korea, Israel have their fingers on the button. A handful of men with the fate of billions in their hands. We know it's insane but they don't seem to care.
This should be shown to them, forced to make them see what would happen to their people and their country, not to mention themselves. Just because they might had a safe place to ride out the bombs doesn't mean they will have something to come back to.
I have no sympathy for the Japanese people of that time. I understand why they attacked Pearl Harbor, they expected the US to come to the negotiating table, they didn't think they would go to all out war.
To try and play the injured party, which this documentary appears to show, is awful;. The atrocities they enacted on the civilian populations of the countries they invaded and prisoners of war is beyond forgivable.
The invasions of Iwo Jima and Okinawa cost the lives of over 20,000 Americans and over 250,000 Japanese. If they had mounted an assault on mainland Japan the estimated US casualties were expected to be in excess of 1 million.
They really had no choice.
I reiterate, show this to those with their finger on the button.