Was 1921-1941 the first Cold War? Testing a Hypothesis

Historians habitually recognize the Cold War had roots predating the mid-1940s. I am writing an article testing the hypothesis that the Cold War began after the Russian civil war. I unpack the hypothesis by discussing six possible objections: the socialist-capitalist confrontation did not (fully) structure the interwar years' inter-state system; the system wasn't bipolar; the Soviet challenge to that system stopped with Stalin's turn to "socialism in one country;" the US wasn't yet central to that system; fascism created a tripolar reality; and nuclear weapons did not yet exist. The payoff of this exercise is that it qualifies some presumably distinctive features of 1945-1991.