The Babylon Bomb

On the Sumerian tablets, an image of a nuclear bomb and the consequences of its application were found. The ancient Sumerians left behind many records on clay tablets, deciphering which, scientists assumed that this mysterious civilization was lost due to deliberate destructive actions. The ancient Sumerians did not assimilate with the nearest nations and did not become the prey of the invaders, just thousands of years ago, somehow, nuclear bombs fell on Sumerian cities. Eventually, a young Assyrian state came to these territories, which occupied and rebuilt some empty Sumerian cities. What was the reason for the destruction of this mysterious civilization?