One People: How Jewish Communities Around the World are Working Together to Confront Antisemitism and Build Resiliency

Daniel is the President of the Executive Council of Australian Jewry (ECAJ), the roof body and voice of the Australian Jewish Community.

He has previously held the roles of Honorary Secretary, Vice-President and Victorian Councillor of the ECAJ.

From 2021 to 2023, he served as President of the Jewish Community Council of Victoria, the roof representative body of the Victorian Jewish community. In 2013 and 2014, together with Nina Bassat AM and Harry Rosenberg, Daniel was a member of Maccabi Australia’s Committee of Review into member protection matters.

Professionally, Daniel is a barrister and King’s Counsel, practicing in civil and commercial litigation. He has previously received the Ron Merkel KC award from the Victorian Bar for his pro bono advice and advocacy in respect of homelessness and elder law.

Daniel and his wife have three children who attend Jewish day schools.

Yonathan Arfi is a Jewish community leader, serving as President of the Conseil Représentatif des Institutions Juives de France (CRIF) since June 2022, and re-elected for a second term in 2025.

Yonathan Arfi was raised in a traditional Sephardic family and educated at HEC Paris. He became actively involved in the Jewish community early on, including serving as President of the Union des Étudiants Juifs de France (UEJF) from 2003 to 2005 and joining the CRIF executive board in 2007.

As CRIF president, he has been a strong voice against antisemitism in French society and politics, advocating for robust public policies to protect Jewish citizens and combat hatred in all forms. Yonathan Arfi has publicly engaged on political issues, figures and and has called for vigilance against extremist influences in French political life.

He represents the French Jewish community in national and international forums, and works to sustain dialogue with French institutions while defending Jewish interests in the broader political debate.

Claudio Lottenberg is the current Chairman of the Advisory Board of the Albert Einstein Brazilian Israelite Charitable Society and the Coalizão Saúde Institute, as well as the President of Lide Saúde and President of the Israelite Confederation of Brazil from 2008-2014 and presently. He is also the Vice-President of Business Leaders (Lide). Lottenberg graduated with a master’s and doctorate from the Paulista School of Medicine of the Federal University of São Paulo, and he completed his medical residency at the Brazilian Council of Ophthalmology and advanced training in ophthalmological emergencies at Manhattan Eye, Ear and Throat (1989).

Lottenberg is the former vice-president of the World Jewish Congress, and currently a special advisor to the president of the World Jewish Congress – Latin America.

He is currently a visiting Professor at Harvard University (USA), full professor of public health policies in the MBA in Health program at the Albert Einstein Israelite Hospital and a member of the São Paulo Academy of Medicine.

Wendy Kahn is the National Director of the South African Jewish Board of Deputies, a position she has held for 18 years.

She responds to antisemitic incidents, working with various authorities to ensure that SA retains its relatively low levels of antisemitism.  The majority of SA antisemitism hails from the anti-Israel/ BDS groups in the country, something that she has been involved in exposing and acting against for nearly two decades.

Since Oct 7, Wendy, together with the leadership of the SAJBD have addressed the many challenges facing SA Jewry in the face of an increasingly hostile government.  Some of the challenges have been addressing government’s hostility to Israel and the SA Jewish community, responding to anti-Israel aggression in the media, protests and on campuses and supporting the SA Jewish community during this difficult time.  The SA government’s ICJ case and other manifestations of government’s contempt for Israel have had practical implications for local Jewry.  The SAJBD has worked to assist the community in addressing these issues.

A large part of Wendy’s work involves ensuring that SA campuses provide safe spaces for Jewish students, that observant Jewish students are not disadvantaged with exams on shabbat or chagim and that antisemitic incidents or sentiment on campus are addressed.

Shaya Lerner is ADL’s Director of Israel Affairs, and Associate Director of Middle Eastern Affairs. He is responsible for helping develop ADL’s Israel policies and programs, including on anti-Zionism, BDS trends, and the Israeli-Palestinian conflict, as well as on issues related to global antisemitism, Iran, and persecuted minorities around the world.

Shaya has drafted and edited numerous ADL statements, letters, op-eds and policy memos on a variety of international issues and has contributed to a number of ADL publications.

Shaya joined ADL in 2011. He resides in White Plains, NY, and holds a Masters in Global Affairs from New York University and a B.A. from Yeshiva University, where he studied history and philosophy.

Ambassador Marina Rosenberg is Senior Vice President for International Affairs at the Anti-Defamation League (ADL), where she leads the organization’s global strategy and international efforts in education, advocacy, and research to combat antisemitism and hate outside the United States, and to advance a safe and democratic State of Israel. She oversees and works with global teams and partners across Europe, the Americas, Africa, the Middle East, and Oceania—building alliances and strengthening
the security of Jewish communities worldwide. A former ambassador and career diplomat, Rosenberg joined ADL in 2023 after more than 16 years with Israel’s Ministry of Foreign Affairs, leading diplomatic missions across South America, Europe, and the Gulf. She served as Israel’s Ambassador to Chile (2019–2022), spearheading efforts to counter antisemitism, anti-Zionism, and the BDS movement, while advancing political, academic, and economic cooperation. Earlier, she served as Head of Mission at Israel’s Office in the United Arab Emirates (2012–2014), contributing to early diplomatic groundwork that would later help enable the Abraham Accords. She also served as Counsellor for Foreign Affairs at Israel’s Embassy in Germany (2014–2017), deepening bilateral collaboration and strategic engagement.

Upon returning to Israel, she held several senior leadership roles, including Special Envoy for Energy Affairs (2022–2023), Director of the Gulf Department (2017–2019), and Acting Deputy Director for UN Specialized Agencies (2009–2012). She is also the co-founder of the Women in Diplomacy Network, where she promoted gender equality in international diplomacy.

At ADL, Ambassador Rosenberg led the Global 100 Survey (2024), spanning 103 countries and territories, and spearheaded the creation of ATLAS, a global data and policy platform on antisemitism. She also founded and leads key international coalitions, including the J7, which brings together representatives from the seven largest Jewish diaspora communities to coordinate global responses to antisemitism, and ALAS, the Latin American Alliance to Combat Antisemitism, which convenes legislators across the region to drive coordinated action and legislative cooperation.

Born in Buenos Aires, Argentina, and raised in Israel, Rosenberg holds a B.A. in Political Science and Latin American Studies from the Hebrew University of Jerusalem and an M.A. in Diplomacy and Security Studies from Tel Aviv University. She holds Israeli, German, and Argentine citizenship and is fluent in English, Hebrew, and Spanish. She currently lives in the Washington, D.C. area with her husband, their two children, and their dog.