Andriy Yermak, Zelensky’s Chief of Staff, Resigns

Andriy Yermak, Volodymyr Zelensky’s chief of staff — and chief enforcer — became the highest-ranking casualty of an investigation that threatens the Ukrainian president’s ability to govern.Andriy Yermak, Ukraine’s chief negotiator, speaking in Geneva in November. He had been widely seen as the country’s second most powerful person.