Japan appealed to the USSR to arbitrate surrender. The USSR responded by holding to the Yalta conference agreements and declaring war on Japan and occupying Manchuria and Korea.
USSR broke the neutrality pact they had with Japan to do so, and the US dropped the second nuke after that pact was broken.
The bombing, declaration, and surrender was a period from August 6-August 15. Eleven days.
Japan appealed to the USSR to arbitrate surrender. The USSR responded by holding to the Yalta conference agreements and declaring war on Japan and occupying Manchuria and Korea.
USSR broke the neutrality pact they had with Japan to do so, and the US dropped the second nuke after that pact was broken.
The bombing, declaration, and surrender was a period from August 6-August 15. Eleven days.