"it is my duty, however, to place before you certain facts about the present position in europe. from stettin in the baltic to trieste in the adriatic an has descended across the continent. behind that line lie all the capitals of the ancient states of central and eastern all these famous cities and the populations around them lie in what i must call the soviet sphere." - winston churchill, march 5, 1946

what words correctly go in the blanks in churchill's statement?

a) cold war

b) iron curtain

c) early sunset

d) soviet union