The election of Eisenhower in 1952 was a seeming transition in many ways. The Republican party took control after a 40 year period of a Democratic administration. The Korean War finally ended after a two year stalemate. The country certainly saw Eisenhower's administration as an opportunity to shift foreign policy in a new direction.
So what was "new" about the new look? Geographic focus? Military strategy? Focus on just one element that you feel to be new when compared to Truman, and consider whether or not the Cold War dramatically shifted in focus.