The leaders in the Grand Alliance were:
1. Winston Churchill: He was the Prime Minister of the United Kingdom during World War II and played a crucial role in forming and maintaining the alliance.
2. Franklin D. Roosevelt: The President of the United States at the time, he worked closely with Churchill to coordinate the efforts of the Allied forces.
3. Joseph Stalin: As the leader of the Soviet Union, Stalin was also a key figure in the Grand Alliance, particularly in the later stages of the war.
These three leaders, representing the United Kingdom, the United States, and the Soviet Union respectively, formed the core of the Grand Alliance during World War II. Their cooperation and leadership were instrumental in the eventual defeat of the Axis powers.
