Answer:
The leaders of Great Britain and the Soviet Union supported dropping the bomb.
Step-by-step explanation:
The Declaration of Potsdam or Proclamation defining the terms for the Japanese surrender was a statement published on July 26, 1945 by the President of the United States Harry S. Truman, the Prime Minister of the United Kingdom Winston Churchill and the President of the Republic of China Chiang Kai-shek, who discussed the terms of the surrender of the Empire of Japan in World War II, as agreed at the Potsdam Conference. The declaration stipulated that if Japan did not surrender, it would face "prompt and total destruction".