The researchers were careful to note that the scholarly understanding of the role of the Catholic world in the actions taken by Germany’s Nazi regime is unchanged.
In unscripted remarks to young Russian Catholics in a video conference on Aug. 25, Francis spoke of past tsars Peter I and Catherine II - both of whom expanded Russian territory.
Nero's Theater was only known from ancient Roman texts, but was never located.
A group of over 20 Christian and Jewish clergy and scholars from around the world came together to delve into the treasures of the Vatican's Hebrew manuscript collection.
"Italy is one of Israel's greatest friends in Europe. Relations between the countries reach new heights every day," said Cohen.
Emanuela Orlandi, the daughter of a Vatican usher, failed to return home on June 22, 1983 following a music lesson in Rome. She was 15 at the time and lived inside the Vatican City.