'Perceived' is correct, as the other option was conditional surrender of Japan. But it sounds much nicer, and is better for morale, to say the bombs or an invas

'Perceived' is correct, as the other option was conditional surrender of Japan. But it sounds much nicer, and is better for morale, to say the bombs or an invasion were the only possibilities. Sources: https://www.washingtonpost.com/opinions/five-myths-about-the-atomic-bomb/2015/07/31/32dbc15c-3620-11e5-b673-1df005a0fb28_story.html https://www.washingtonpost.com/opinions/five-myths-about-the... https://www.atomicheritage.org/history/debate-over-japanese-surrender https://www.atomicheritage.org/history/debate-over-japanese-... https://mises.org/library/hiroshima-myth https://mises.org/library/hiroshima-myth