No, they weren't. There was a very good program on the Discovery Channel tonight about the dropping of the Hiroshima bomb. The Japanese were originally considering surrender, but the US dropped the requirement of an unconditional surrender, leading the Japanese government to the mistaken conclusion that we had a desperate agenda for ending the war ASAP, and so they did an about-face. The final decision to drop was made when it became clear that Japan was not going to surrender after all. Was the decision to drop the right one? I dunno. But, it seems likely the war would have gone on much longer if it hadn't been done.