the Japanese were basically unbothered by it and only surrendered the war once the soviets engaged their positions in northern china.

Exactly.

The globe had already been carved up by Churchill, Roosevelt, and Stalin at the Yalta Conference.

Final plans for defeat of Germany, postwar Europe plans, set date for United Nations Conference, conditions for the Soviet Union's entry in war against Japan.

<Edit > The hoax was probably agreed to at the Potsdam Conference

• Attended by Stalin, Truman, Attlee, Churchill.
  
• We know Truman discussed the Trinity* test results with Stalin.
  
• Historians marvel at Stalin's composure after hearing of this.
  
• This also explains the planned cold war hoax.
  
• Trinity (3)...
  

They (Japan) were the last to learn they were "nuked", and we're forced to accept this hoax as part of their unconditional surrender.

This is the only time that a hoax like this could be pulled off.
They were completely dominated, and the US propaganda machine swing into action.

The British and Soviets were already in on it.

Other genocidal WW2 hoaxes were likely also agreed discussed at Yalta.

The scope and magnitude of these hoaxes have grown over time.

Supposedly, today's nukes can blow up the entire world.

It's worth mentioning that numerous nukes have accidentally been launched, and dropped, etc.

An ongoing miracle prevents nukes from detonating. This same miracle also protects clouds.

If you're interested in evidence of other hoaxes.

https://www.big-lies.org/index.html