"William Taylor, who was top American diplomat in Ukraine and an impeachment inquiry witness, has departed his post as chargé d'affaires ad interim in the country.
Taylor, a West Point graduate and long-time diplomat, testified twice in the impeachment inquiry into President Donald Trump, providing key testimony. Taylor succeeded ousted Ambassador Marie Yovanovitch in June when she was unexpectedly removed from her position by the White House."
azcentral.com/story/news/politics/2020/01/02/bill-taylor-departs-ambassadorship-role-ukraine/2797844001/