“As the free world grows stronger, more united, more attractive to men on both sides of the iron curtain—and as the soviet hopes
for easy expansion are blocked—then there will have to come a time of change in the soviet world. nobody can say for sure when that is going to be, or exactly how it will come about, whether by revolution, or trouble in the satellite states, or by a change inside the kremlin.” —harry s. truman’s farewell address. why did president truman believe that political change would come to the soviet union?
Because he believed that the success of capitalism would force the Soviet Union to change.
Explanation:
During the Cold War the United States and Union entered into a conflict and disputed the influence in other countries. As the United States tried to expand the capitalist system among other countries, the Soviet Union tried to do the same with the communist system.
Truman believed that capitalism had a much greater chance of expanding into the world and creating a sovereign force to the point of forcing the Soviet Union to change its political vision. This is what Truman means in the excerpt above.