Andriy Yermak, Zelensky’s Chief of Staff, Resigns NYT Par :Kim Barker and Andrew E. Kramer 28 novembre 2025 à 16:54 Andriy Yermak, President Volodymyr Zelensky’s chief of staff and top peace negotiator, became the highest-ranking casualty of an investigation into a vast kickback scheme. © Eric Lee/The New York TimesAndriy Yermak, in Washington last year. He had been widely seen as the country’s second most powerful person.