Answer:
I believe Ronald Reagan played a leadership role in ending the Cold War, which can be seen as a big role. However, the people that carried out the missions directed by Ronald deserve credit as well, an equally big role in my opinion. All together, the Cold War required many roles to be filled and played out in order to be neutralized, but sticking to the original question, yes I believe Ronald Reagon played a large role in ending the Cold War.
Step-by-step explanation:
This is a debatable question and quite political, I will answer with my honest opinion.