>>190808915>After the first one dropped the Japanese offered a conditioned surrender (they wanted to keep their emperor) which the Americans didn't likeIt was already decided among the allies ahead of time, no conditions.
Going back on a decision like that would not have been seen lightly by the other allied powers either.
Not to mention it would put into question why negotiations weren't put into place with Germany before Berlin was only ruble.
>shortly after the Soviets went into Manchuria making the unconditional surrender a matter of timeTaking Manchuria crippled the Japanese ability to act on the mainland, but there was still a sea between the Soviets and Japan, and the Soviet navy did not have either the numbers or the specific ships needed for a invasion of that sort.
>lost their only tool the could use in negotiationThey still had their own population as hostages, and until the Allies forced a unconditional surrender the war could not be written off, meaning massive cost in manpower, equipment and industrial effort had to be kept in place maintaining the control over the Pacific and to tighten the noose around mainland Japan.
