Answer:
It is not an easy answer to give because there are differents point of view.
Step-by-step explanation:
First all we have to review and study all the causes to arrive the situation between US and Japan.
Japan was considered a potential country for a new panoramic context of the world. US needed to keep control of their interests and order a world under a heavy cost of the war.
The diffrent point of view is the argument against using the bomb is that deliberate killing of civiilans on this scale violates the principles of just war.