Short Answer 
When writing a letter to President Truman, begin with a formal greeting, clearly state your purpose for supporting an end to the war, and highlight the negative consequences of continued conflict, such as loss of lives and property destruction. Conclude by emphasizing the importance of peace for national security and international relationships.
Step 1: Address the Recipient Properly
Begin your letter by formally addressing the recipient. In this case, you should start with “Dear President Truman,” to show respect for the office and the person you are writing to. Make sure to include a greeting that acknowledges the importance of the communication.
Step 2: State Your Purpose Clearly
In the body of the letter, clearly express your purpose for writing. Introduce yourself and explain your support for ending the war. Use phrases such as “I am writing to you to provide support for the decision to put an end to this war,” to convey your message effectively. Detail your thoughts about the significance of the events at Pearl Harbor and the necessity of peace.
Step 3: Highlight the Consequences of War
Conclude your letter by emphasizing the negative ramifications of war. You might list the potential outcomes, such as:
- Loss of lives
- Destruction of properties
- Ongoing tensions between nations
Express your belief that making peace with Japan is crucial for national security and improving international relationships. This will leave the reader with a strong understanding of your position.