This was followed by his influential "Seeds of Repression: Harry S. Truman and the Origins of McCarthyism" (1971), and his influential article "Roosevelt and Truman on Yalta: The Origins of the Cold War" in "Political Science Quarterly" (1972). The former located the origins of so-called McCarthyism not with the junior senator from Wisconsin but with the context of the Cold War and President Harry Truman's flawed leadership and anti-Communist rhetoric which created a climate permitting the advent of the phenomenon of McCarthyism. The article highlighted Truman's role in determining, in part, the way in which the Cold War materialized.