How to evaluate Kennedy?

On the whole, history's evaluation of him is relatively pertinent. First of all, he is young and promising. He is the youngest president in American history. He is full of energy and enthusiasm for his motherland and work, which is unmatched by previous American presidents. Second, although he started the Vietnam War, he always adhered to the principle of finiteness to prevent the war from expanding further. Unfortunately, he died young and left no heir to his policy. Eventually, the United States fell into the quagmire of civil war. He adopted a tough policy towards the Soviet Union, especially in dealing with the Cuban missile crisis, which won great benefits for the United States. Third, he was far-sighted, vigorously developed science and technology, and introduced a series of policies conducive to the development of the space industry, which contributed to the implementation of the moon landing plan.