It was expedient to nuke Hiroshima and Nagasaki. Either that, or a massive air and amphibious invasion of the Japanese mainland that would prolong the war.
...and the Soviets would've taken their slice of Japan too.
What an incredible selection of images. It's a shame a lot of war-related media today is still very Western-centric. The modern conflicts of South Asia had (and continue to have) implications for billions of people.