Just to put the record on Japan straight.
Aug 6th- A bomb on Hiroshima.
Aug 8th-9th- Russia defies the Soviet- Japanese Neutrality Pact, invades Manchuria.
Aug 9th- A bomb on Nagasaki
It has been said that the Russian campaign in Manchuria was the reason that the Japanese surrendered when they did.
After Nagasaki, Truman ordered military operations against Japan be continued.
Aug 15th- The Emperor announced the surrender.
Aug 20th -The Russian campaign ended.
Sept 2nd- Formal surrender signed.