You do not see the difference between conventional warfare between armies and dropping untested new weapons on mass destruction on civilian populations?
This is a deliberate calculated war crime. Hundreds of thousands of people were burned, suffocated and boiled to death in seconds let alone the radiation for no good reason. No educated person is unaware of the horror of launching a nuclear bomb on a civilian population. This is an act of evil.
How many countries have used nuclear weapons? Why do you think nuclear weapons are controlled and treated as a separate class of weapons under strict control?