Why was Nixon so fixated on prosecuting Ellsberg?

In early 1967, Secretary of Defense Robert S. McNamara was struggling with a mounting sense of frustration over the Vietnam War. Questioning the decision-making process that had led to such deep US involvement, McNamara initiated a comprehensive analysis of post-1945 policy in the region. So began the creation of what would come to be called the "Pentagon Papers."

Explanation:

if you have to make a general question and respond to your thoughts, then this isn't really a question someone can you on. read the passage, form your question, and answer using your thoughts. no one else can understand how you interpreted this text if you don't tell us.

we need the diagram to answer this correctly.