Given that the Japanese military wanted to continue the war even after both Hiroshima and Nagasaki, your conjecture is demonstrably untrue. Remember, the military was the primary power in the Japanese government, second only to the emperor, and were the driving force behind starting the war as well. Also remember that the firebombing campaign across all of the other major cities had already inflicted combined casualties far greater than Hiroshima and Nagasaki combined; immense deaths of their own civilians was seen as an unavoidable necessity to defend their homeland.
