The struggle in Vietnam failed for many reasons.  Many historians agree
            
 on the fact that many of the troubles began in Washington for lack of a
            
 clear plan of action.  The war became more problematic when American troops
            
 were not prepared for the tactics and the determination of the North
            
 Vietnamese.  In addition, as the war dragged on without any success or end
            
 in sight, the American public reacted with a fury that could not be
            
    As with all wars, the intention for an American presence in South
            
 Vietnam was to prevent the spread of Communism.  While many believed the
            
 war was wrong in that it promoted imperialism, others believed that the war
            
 was an opportunity to restore law and order. While many things were unclear
            
 about the war, the one thing that did seem clear was the fact that America
            
 could not keep the war at arm's length any longer.  Support and aid were
            
 not going to be enough and when the American presence was felt, things
            
    Things in Washington became worse when Johnson's Secretary of Defense,
            
 John McNamara became uncomfortable with how things were unfolding in
            
 Vietnam.  The president halted bombing for a short period of time in 1968
            
 but those efforts were practically useless.  The public was becoming
            
 outraged at the worsening situation while Johnson's advisors were urging
            
 him to send more troops to the area.  He was torn with no clear answer.  As
            
 a result, his popularity fell.  Karnow claims, "The country's trust in his
            
 authority had evaporated.  His credibility--the key to a president's
            
 capacity to govern--was gone" (Cooper 546).  Johnson was not just facing a
            
 negative reaction from the public, he was facing failure in Vietnam, which
            
 ultimately meant failure in the next election.  The pressure was so heavy
            
 that Johnson decided not to run for reelection.
            
    The bombing of North Vietnam was not nearly as successful as many had
            
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