Last week saw a new wave of revisionism on President Harry Truman’s decision to drop the atomic bombs on the Japanese cities of Hiroshima and Nagasaki. But thanks to those bombs, 75 years ago today, Imperial Japan surrendered. A most terrible and important war was won.

I note this, because while we should always be willing to reassess our understanding of history in light of new facts, I remain unconvinced by those who now suggest that the atomic bombing of Nagasaki on Aug. 9 was unjustified. Moreover, I believe those arguments fail to recognize what would have happened had the war dragged on.