Answer:
He meant it was the Soviet Step Policies "Eisener Vorhang" deriving onto the Cold War.
Step-by-step explanation:
In the spring of 1946 he broadcasts a radio speech at Fulton, Missouri so that masses understood that in the European continent had descended an "IRON wall" dividing not only Europe but specifically Central from Eastern Europe as well, splitting Warsaw, Prague, Berlin and Budapest. called the Soviet step.