Winston churchill coined the phrase "iron curtain" in reference to what?

There was said to be an "iron curtain" dividing the communist side of Europe (mainly the USSR (AKA Soviet Union)) and the non-communist parts of Europe.

although the legal justifications for the trials and their procedural innovations were controversial at the time, the nuremberg trials are now regarded as a milestone toward the establishment of a permanent international court, and an important precedent for dealing with later instances of genocide and other crimes