On the contrary: There was indeed a (moral) "nexus."
The legitimacy of the U.S. employing fire-bombing / developing and later using the A-Bomb was founded - partly - on the barbarity with which the Nazis and the Japanese waged war / committed genocide (and in part it was, paradoxically, also simply the most-compassionate means of quickly ending the war).
When dealing with so ruthless an adversary, ruthless means are justified.
Regards,
Thanks for the explanation.
We’ll never agree on this. But that’s okay and FR is here to air differing viewpoints.
You're still left standing with the idea that our barbarism was justified by their barbarism.
(If the Japanese had presented an argument that their war in China was going to end faster because of their barbarity, your logic here implies that you would accept it.)