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Daniel S. Mariaschin to Retire as Bnai Brith CEO After 37 Years, Citing Rising Antisemitism and Internal Divisions
Daniel S. Mariaschin, who has led B’nai B’rith International for 37 years, announced that he will step down as chief executive officer on June 30 2026. The nonprofit’s board confirmed the decision at a meeting in Washington, D.C., and the organization released a statement saying the retirement follows a long career of advocacy that began in 1973.
Mariaschin’s announcement comes amid a surge in antisemitic incidents worldwide, including the October 7 Hamas attacks on Israel. He told the Jewish News Syndicate that the “transmission belt of hate” has accelerated, moving from letters and long‑distance calls to instant, pervasive online content. According to him, this shift has made it “more important than ever for all hands to be on deck to fight hate.” He added that he is not retiring because of exhaustion but because he wants to shift his priorities at this stage of his career.
During his tenure, B’nai B’rith has fought anti‑Israel bias at the United Nations and in other international forums. Mariaschin said the organization has been active in Latin America, where he has recently visited presidents who were “particularly spiteful to Israel” during the Gaza war. In Europe, the Brussels office works with members of the European Parliament to counter “the rise of antisemitism in many of those countries.” The nonprofit has also responded to leaked European Union reports that it views as one‑sided and that it believes misrepresent the conflict.
Mariaschin’s career began in Boston’s Jewish Community Relations Council, where he organized a demonstration against the visiting Bolshoi Ballet. He later served as director of the New England office of the American Zionist Federation, the Middle East affairs department at the Anti‑Defamation League of B’nai B’rith, and as an assistant to ADL national director Nathan Perlmutter. He also held a position as director of political affairs at AIPAC.
At B’nai B’rith, he helped rescind the United Nations “Zionism is racism” declaration, fought the Israel boycott, and pressed for Holocaust restitution. He described the organization as a “great incubator” that has given birth to the ADL and neighborhood youth organizations.
The nonprofit’s current focus includes public diplomacy, senior care, and natural disaster assistance. B’nai B’rith sponsors affordable housing for seniors, operating 35 buildings in 27 communities. The organization also advocates for transportation, prescription drug access, and protection against internet scams.
Mariaschin was honored at a gala tribute held in late May. The event announced the creation of the Daniel S. Mariaschin Institute for Leadership and Public Policy. Robert Spitzer, B’nai B’rith president, said the institute would “cultivate the next generation of leadership, influence global policy discussions, and engage decision‑makers on issues critical to the Jewish people and democratic values worldwide.” Israeli President Isaac Herzog praised Mariaschin as a “key figure of so many of the defining moments that shaped us.” Phyllis Greenberg Heideman, president of the International March of the Living, said his legacy would “live long” and be “one of compassion, understanding and commitment.”
Looking ahead, Mariaschin said he plans to write a book addressing the main challenges facing the American Jewish community and proposing remedies. He expressed deep concern about internal dissension over Israel. According to him, “non‑Jews tend to take their cues from Jews on how to view Israel.” He emphasized the need to educate younger generations about Jewish continuity, Zionism, and the importance of being Jewish.
The organization will continue its advocacy work after Mariaschin’s departure, with the new institute positioned to support leadership development and policy influence. B’nai B’rith’s senior housing program and public‑service initiatives remain active, and the nonprofit will maintain its engagement with European and Latin American partners to counter antisemitism.
The retirement marks the end of a 53‑year career in Jewish advocacy, but the organization’s mission to protect Jewish wellbeing and promote democratic values will persist under new leadership.
Mariaschin’s announcement comes amid a surge in antisemitic incidents worldwide, including the October 7 Hamas attacks on Israel. He told the Jewish News Syndicate that the “transmission belt of hate” has accelerated, moving from letters and long‑distance calls to instant, pervasive online content. According to him, this shift has made it “more important than ever for all hands to be on deck to fight hate.” He added that he is not retiring because of exhaustion but because he wants to shift his priorities at this stage of his career.
During his tenure, B’nai B’rith has fought anti‑Israel bias at the United Nations and in other international forums. Mariaschin said the organization has been active in Latin America, where he has recently visited presidents who were “particularly spiteful to Israel” during the Gaza war. In Europe, the Brussels office works with members of the European Parliament to counter “the rise of antisemitism in many of those countries.” The nonprofit has also responded to leaked European Union reports that it views as one‑sided and that it believes misrepresent the conflict.
Mariaschin’s career began in Boston’s Jewish Community Relations Council, where he organized a demonstration against the visiting Bolshoi Ballet. He later served as director of the New England office of the American Zionist Federation, the Middle East affairs department at the Anti‑Defamation League of B’nai B’rith, and as an assistant to ADL national director Nathan Perlmutter. He also held a position as director of political affairs at AIPAC.
At B’nai B’rith, he helped rescind the United Nations “Zionism is racism” declaration, fought the Israel boycott, and pressed for Holocaust restitution. He described the organization as a “great incubator” that has given birth to the ADL and neighborhood youth organizations.
The nonprofit’s current focus includes public diplomacy, senior care, and natural disaster assistance. B’nai B’rith sponsors affordable housing for seniors, operating 35 buildings in 27 communities. The organization also advocates for transportation, prescription drug access, and protection against internet scams.
Mariaschin was honored at a gala tribute held in late May. The event announced the creation of the Daniel S. Mariaschin Institute for Leadership and Public Policy. Robert Spitzer, B’nai B’rith president, said the institute would “cultivate the next generation of leadership, influence global policy discussions, and engage decision‑makers on issues critical to the Jewish people and democratic values worldwide.” Israeli President Isaac Herzog praised Mariaschin as a “key figure of so many of the defining moments that shaped us.” Phyllis Greenberg Heideman, president of the International March of the Living, said his legacy would “live long” and be “one of compassion, understanding and commitment.”
Looking ahead, Mariaschin said he plans to write a book addressing the main challenges facing the American Jewish community and proposing remedies. He expressed deep concern about internal dissension over Israel. According to him, “non‑Jews tend to take their cues from Jews on how to view Israel.” He emphasized the need to educate younger generations about Jewish continuity, Zionism, and the importance of being Jewish.
The organization will continue its advocacy work after Mariaschin’s departure, with the new institute positioned to support leadership development and policy influence. B’nai B’rith’s senior housing program and public‑service initiatives remain active, and the nonprofit will maintain its engagement with European and Latin American partners to counter antisemitism.
The retirement marks the end of a 53‑year career in Jewish advocacy, but the organization’s mission to protect Jewish wellbeing and promote democratic values will persist under new leadership.
