While planning for the invasion of Japan, the Department of the Army estimated AT LEAST 1,000,000 American and Allied troops to carry out the invasion. Estimates on allied casualties ranged from 100,000 to 250,000 DEAD. Not wounded, but DEAD. The amount of time estimated to take the island was over a year. Estimates on Japanese dead were well over a MILLION.
The Japanese Army had at least three years to build up their defenses for the home island, KNOWING that eventually the allies would have to invade. The Japanese public had been encouraged to get involved AND were expected to fight to the last man. Look at Saipan and Okinawa and you will see just a small example of what an invasion of the main island would have been like.
Luckily, and yes I said luckily, the United States developed and delivered the atmoic bombs on Hiroshima and Nagasaki. Was the result of those bombings horrific? Yes, absolutely. Hundreds of thousands were killed and generations of Japanese were mutilated due to radiation. But, an invasion of the main island would have been unimaginable horror for both the Japanese AND the allies.
Apologize for the bombings? If you have ANY sense of history or know ANYTHING about what occurred and what would have happened IF the invasion had taken place, then you would know that an apology is absolutely absurd. Not only that, but it is an INSULT to those who lost their lives to one of the most horrific abuses in modern warfare. The Bataan Death March, the concentration camps on the Phillipines, the slave labor in China. No, if you have any idea of what happened then an apology is an afront to those who suffered from a war started and promoted by the Japanese. As one wise man put it, " You reap what you sow."