"Who bears the greater responsibility for the creation and location of the Iron Curtain, Russia or the West?"

When we were children, the Berlin Wall was still there. I remember those horrific stories about the "Doomsday machine"; luckily its software didn't have any bug.
This file is in pdf format, and to view it you need Acrobat Reader.

"Who bears the greater responsibility for the creation and location of the Iron Curtain, Russia or the West?"