No one, not even he could have averted the war without a historical wrong that could no longer be justified in a democracy - the continuation of legal human bondage in the United States. But to answer the question. Yes, I think it was very possible that no guns had to fire, and it would have been to me a revolting development.
Kingdoms of the Iberian Peninsula
B. Zhou They introduced the Mandate of Heaven to justify their overthrow the Shang dynasty.
More and more Americans were killed in Vietnam.
The enemy in Vietnam was unclear.
The draft disproportionately targeted low-income men.
US goals in Vietnam were uncertain and hard to achieve.
This is correct
I believe the answer is a