Jewish mission, and called on Catholics to fight anti-Semitism. Pope Francis has been considered to be particularly instrumental in furthering Catholic-Jewish relations. During a visit to a synagogue, Francis echoed Pope John Paul II's statement that Jews are the "elder brothers" of Christians, and further stated: "in fact you are our brothers and sisters in the faith. We all belong to one family, the family of God, who accompanies and protects us, His people." Jewish responses Orthodox Rabbinic Statement on Christianity On 3 December 2015, fifty years after the issue of Nostra aetate, the Israel-based Center for Jewish-Christian Understanding and Cooperation (CJCUC) spearheaded a petition of orthodox rabbis from around the world calling for increased partnership between Jews and Christians. The unprecedented Orthodox Rabbinic Statement on Christianity, entitled "To Do the Will of Our Father in Heaven: Toward a Partnership between Jews and Christians", was initially signed by over 25 prominent Orthodox rabbis in Israel, United States and Europe and now has over 60 signatories. Between Jerusalem and Rome On 31 August 2017, representatives of the Conference of European Rabbis, the Rabbinical Council of America, and the Commission of the Chief Rabbinate of Israel issued and presented the Holy See with a statement entitled Between Jerusalem and Rome. The document pays particular tribute to the Second Vatican Council's Declaration Nostra aetate, whose fourth chapter represents the Magna Charta of the Holy See's dialogue with the Jewish world. Between Jerusalem and Rome does not hide the theological differences that exist between the two faith traditions while all the same it expresses a firm resolve to collaborate more closely, now and in the future. Significant outstanding issues Pius XII Some Jewish groups and historians have said Pope Pius XII, who was Pope from 1939 to 1958, stayed silent during the Holocaust and did not do enough to save lives. They have sought access to Vatican World War II era archives to determine whether or not Pope Pius XII did enough to help Jews before or during the war, or whether he held some sympathy for the Nazi regime. The Vatican has until 2020 maintained a policy of allowing only partial access to the archives. Jewish groups and historians have argued for years that the Vatican should not move forward with Pius' beatification until the Vatican's full wartime archives were opened. On 2 March 2020, the Vatican opened to historians its archives relating