Originally posted by glitchplz
Your source is a very iffy source. Also I have found information that counters it and shows the opposite. Their sole source of information is from a radical persona Gar Alperovitz. He has stated that he began his ideas through assumptions, "Since my own work helped initiate the case for an assumption based theory". Information is twisted and misused in this situation. Other various sources stated Japan secretly held a meeting with the Soviets asking for peace not the U.S. There were also kamikaze attacks during the beginning of April to the end of May, not signs of peace. The newly formed Japanese government was continuing assaults on Americans. Also Japan was given the choice of peace before the bomb was dropped, the declined, and after the first bomb was dropped, they didn't ask for peace. If you can find more information on the supposed "document" in April please share it, otherwise I do not feel there is sufficient evidence of a request for peace with the United States.
"The codebreakers: the story of secret writing" by David Kahn
Mark Weber stated this as well.
Dennis D. Wainstock - "unconditional surrender was a policy of revenge, and it hurt America's national self-interest. It prolonged the war in both Europe and East Asia, and it helped to expand Soviet power in those areas." (This is after Japan offered a conditional surrender)