On the night of 10 August in Washington, US Colonels Dean Rusk and Charles H. Bonesteel III were assigned with dividing the Korean Peninsula into Soviet and US occupation zones and proposed the 38th Parallel.
Everything changed after the atomic bombings of Hiroshima and Nagasaki and the Soviet declaration of war. And on August 10, the cabinet drafted an "Imperial Rescript ending the War" following the Emperor's indications that the declaration did not compromise any demand which prejudiced the prerogatives of His Majesty as a Sovereign Ruler.