David Michaels, B'nai B'rith's Director of UN and Intercommunal Affairs, spoke to the Jerusalem Post after his meeting with the new appointee in the Vatican.
After meeting Leo, Vance met on Monday with officials at the Vatican's Secretariat of State, the Church's top diplomatic office
Pope Leo XIV's inaugural mass was on Sunday. Ahead of it, Herzog highlighted his family's ties to diplomatic relations with the Holy See.
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The new pontiff resumed his predecessor’s calls for a ceasefire in his first Sunday address. Official church policy on Israel or the war is unlikely to change.
Every year, Jews have an opportunity to "wipe the slate clean" - it seems that the new Pope is also taking the same approach.
More than a dozen other Jewish leaders from around the world are expected to attend Pope Leo's inaugural mass on Sunday.
Herzog is expected to participate in the event alongside other foreign leaders.
Leo said today's world was living through "the dramatic scenario of a Third World War being fought piecemeal," again repeating a phrase coined by Francis.