The USSR's role in manufacturing the allegations against Pius XII
Amen is loosely based on German playwright, Rolf Hochhuth's "The Deputy" (1963), which successfully turned Pius XII into a villain.
An article by Ion Mihai Pacepa, a high-level Romanian intelligence agent who defected to the West, reveals the Soviet Union's role in spreading the allegations against the Vatican in order to discredit the Catholic Church, which opposed its rule in Eastern Europe.
See http://article.nationalreview.com/?q=YTUzYmJhMGQ5Y2UxOWUzNDUyNWUwODJiOTEzYjY4NzI=