The statement that best identifies how Cuba became involved in the Cold War is:
"The victory of Fidel Castro in the revolution set the stage for conflict between the U.S. and the Soviet Union."
Fidel Castro's rise to power in Cuba in 1959, which established a communist government, led to tensions between the U.S. and Cuba, and subsequently drew the Soviet Union into the dynamics of the Cold War, as Cuba aligned itself with the Soviet bloc.