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Japan gets nuked more than twice in 1948 ...

What if they got the bomb first, which was possible, though apparently not likely?

What if, feeling that victory was possible, they turned the biological weapons they were developing in China on us?

And, yes, there is that question of bomber range:

[ArrogantBustard]

At no point did Japan have, or have any even unreasonable hope of having, the ability to detonate an atomic weapon on the United States.

It did, however, have the ability to detonate on under the United States Navy. If, that is, it had a nuke in the first place. I have no doubt that the devotees of the Divine Wind would have tried it.

[moonshot925]

“What if they got the bomb first, which was possible, though apparently not likely?”

There is almost no chance of the Japanese ever being able to develop nuclear weapons in the 1940’s.

To build nuclear weapons, the United States had to employ 130,000 people, construct 30 large facilities around the country, acquire thousands of tons of raw materials and spend $2 Billion.

The Japanese did not have the time, money, resources, knowledge or technology to achive this.

[M1903A1]

The Japanese were not only developing, but had actually deployed, chem and bio weapons in China. They didn’t dare turn them loose on the Allies (outside of a handful of isolated instances) because they knew the West had far more experience with them, from not all that long ago, and would unleash hell on them in response.