The Japanese were not ready to surrender - children as young as ten were being taught to use spears in school. Also, the Japanese culture at the time honored death above surrender.
I look at it this way - If the Japanese did not bomb Pear Harbor, Hiroshima and Nagasaki would have never been bombed. Nor, for that matter, would there have been the tragic fire bombing of Tokyo.
A nation that valued death as a means of honor over losing a fight or surrendering, a nation that was using the schools to teach young children how to spear invading armies, a nation that viewed their emperor as a god, a nation that drew first blood - was not ready to surrender. In the Japanese culture surrender was an act of cowardice only reconciled through suicide (Hari Kari). NO - they were not ready to surrender.
A land invasion was estimated to cost up to 2,000,000 allied lives - the world was tired of war and the allied countries had lost millions upon millions of lives already.
It is so easy to sit back today and say what you would do or how you would handle the same situation - but I guarantee that you would not act in the same manner with what you know and think in 2010 versus what you would have known and thought in 1944.
Instead of looking back and stating that those were war crimes or should have been war crimes - let us look instead at what the world should have learned.
1. Never appease a dictator.
2. Never allow rouge nations to overrun those around them.
3. Never allow human rights to be trampled.
4. Never allow any government to overstep the bounds of their own high laws.
It is sad that so many fellow human beings died throughout all of WWII. Hopefully lessons were learned but I don't think that they were.