2. Japanese Intransigence Sets The Stage for a Tragic Mistake
Every day the war continued was another day in which millions suffered, and in which thousands more became casualties. In the meantime the Japanese government, run by militarists hopped up on bushido and machismo, vowed to fight to the end. So America correctly saw Japan as a formidable foe that was inflicting significant harm every day, and that would continue to do so indefinitely if not stopped.
In short, Japan was a menace that needed putting down ASAP. However, a simple mistake in translation might have determined when and how the US went about putting Japan down, and led to the decision to drop the atomic bombs on Hiroshima and Nagasaki. As such, it might have been the most momentous translation mistake in history.