1945 - World War II: Hiroshima, Japan is devastated when the atom bomb "Little Boy" is dropped by the United States B-29 Engola Gay. Around 70,000 people are killed instantly, and some tens of thousands die in subsequent years from burns and radiation poisoning (Source)
Recommended sermons and podcasts:
Just War Theory, Pearl Harbor and the Second World War, by Historian Bill Potter
Hiroshima, Scorched Earth, and Nuclear Warfare - Why We Don't Kill Women and Children, by Pastor Kevin Swanson
Were the Atom Bombs on Hiroshima and Nagasaki Justified? by Peter Hammond
Was Pearl Harbor An Unprecedented Attack? by Peter Hammond
Recommended reading: