That's stupid Revisionist thought and you know it. You can't only blame one side for the things it did to try and secure political power for itself.
And yes, Stalin knew that the bomb was used and ready before Truman told him, and it's all good and well that the bomb was used experimentally on any enemy target, no matter its degree of significance.
And NO the nips were not ready to talk terms, until it looked like the Americans were right on their goddamn doorstep. And don't you dare bring up the race card (like that stupid Jap historian, Takei or something) or the humanitarian issue, because that was fucking igsignificant in people's minds militarily at the time.