FDR lives through all of 1945, test-explodes atomic bomb off Japanese coast.

[marathag]

Not going to happen. There were four radar altimetric fuzes, and just one had to work.
In the incredibly unlikely event that all four malfunction and the bomb does not explode at altitude, it falls to the ground. The acceleration is such that its parts collapse together. That is exactly the way in which these bombs worked: critical mass is reached. Now, naturally it's unlikely that the chain reaction caused in this way will achieve the expected and desired yield. It may range from something of a fizzle (just a few kilotons instead of some 20) to a very hot dirty dirty dirty bomb. In

Since it was basically a 4.5 ton chubby torpedo, if impact doesn't dislodge the U235 Rings, to get to critical mass or a subcritical fizzle, a Little Boy will bury deep, as it's pretty much a bunker buster in construction. It can go deep enough to get below the water table, water will get ut, and that's a moderator, so you will get enough fission to flash that water into radioactive steam so you will.have the Devil's Putt-Putt motor running for a very long time

 

[GeographyDude]

There was an attempted coup?

Looks like a brief attempt.

https://www.stripes.com/news/specia...rendered-without-the-atomic-bombings-1.360300

‘ . . . Diehard Japanese hawks attempted a palace coup to save the emperor’s “right to rule,” but the military quashed it. The emperor had spoken and the military would obey. . . ’

And fellow members might have additional sources.

 

[GeographyDude]

. . . The American mob has no way to get any sort of message to the Japanese government. . .

I’m not suggesting we use the mob itself, but rather that we borrow some of the methods.

For example, threats are usually better made privately, and often veiled and indirectly. (A public threat, or “ultimatum,” is basically for domestic political consumption.)

 

[Johnrankins]

I’m not suggesting we use the mob itself, but rather that we borrow some of the methods.

For example, threats are usually better made privately, and often veiled and indirectly. (A public threat, or “ultimatum,” is basically for domestic political consumption.)

It wouldn't have helped, we were able to read Japan's mail and knew what they thought was acceptable. It was ridiculous. They wanted to keep everything they had prior to the war. Do you think the US or GB would ever consider that it was anything as a joke? Japan was acting like it was being stalemated rather than being badly beaten.

 

[Barry Bull]

Looks like a brief attempt.
And fellow members might have additional sources.

Not before they kill important officers.
https://en.wikipedia.org/wiki/Kyūjō_incident

The officers killed Lieutenant General Takeshi Mori of the First Imperial Guards Division and attempted to counterfeit an order to the effect of occupying the Tokyo Imperial Palace (Kyūjō). They attempted to place the Emperor under house arrest, using the 2nd Brigade Imperial Guard Infantry.

 

[Zheng He]

It wouldn't have helped, we were able to read Japan's mail and knew what they thought was acceptable. It was ridiculous. They wanted to keep everything they had prior to the war. Do you think the US or GB would ever consider that it was anything as a joke? Japan was acting like it was being stalemated rather than being badly beaten.

This, the Japanese "peace proposal" that I'm not sure the IJA would have accepted anyhow essentially involved hitting the reset button and returning to 6 December 1941 and pretending the previous three plus years never happened.