“Even in former days, Korea was known as the 'hermit kingdom' for its stubborn resistance to outsiders. And if you wanted to create a totally isolated and hermetic society, northern Korea in the years after the 1953 'armistice' would have been the place to start. It was bounded on two sides by the sea, and to the south by the impregnable and uncrossable DMZ, which divided it from South Korea. Its northern frontier consisted of a long stretch of China and a short stretch of Siberia; in other words its only contiguous neighbors were Mao and Stalin. (The next-nearest neighbor was Japan, historic enemy of the Koreans and the cruel colonial occupier until 1945.) Add to that the fact that almost every work of man had been reduced to shards by the Korean War. Air-force general Curtis LeMay later boasted that 'we burned down every town in North Korea,' and that he grounded his bombers only when there were no more targets to hit anywhere north of the 38th parallel. Pyongyang was an ashen moonscape. It was Year Zero. Kim Il Sung could create a laboratory, with controlled conditions, where he alone would be the engineer of the human soul.”
― Christopher Hitchens, Love, Poverty, and War: Journeys and Essays

“It's a good thing we won the war. If we hadn't, I'd be hanged as a war criminal" -- Gen Curtis LeMay, quoted by Mahaffey, p.231

On March 10, 1945, LeMay's XXI Bomber Command sent 334 B-29's to Tokyo, loaded with 1,669 tons of incendiary bombs. The resulting firestorm killed over 100,000 Japanese and injured over a million. A quarter of the industrial production in Tokyo was destroyed. (p.232, paraphrased)

The atomic bombing of Hiroshima, on August 6, 1945, killed around 120,000 Japanese. (Wikipedia)”
― James Mahaffey, Atomic Adventures: Secret Islands, Forgotten N-Rays, and Isotopic Murder