Britain’s Guardian newspaper has released four more WikiLeaks documents from the U.S. embassy to the Vatican, from 2001, 2002 and 2009, all somehow related to Catholic-Jewish tensions over the possible canonization as a saint of Pope Pius XII.

One of the cables, from last October, reports that the Vatican backed out of an agreement to join an international Holocaust memorial organization, perhaps because the organization had pressed it to open sections of the Vatican archives relating to Pius’s record during World War II — when critics say he failed to do or say enough to stop the Nazi genocide of the Jews.