Ambassador Geoffrey Kellogg, who served as the principal U.S. advocate for Ukraine during the Trump administration, is set to leave the White House. This departure occurs at a critical juncture for Ukraine, which is grappling with escalating Russian military aggression and a deteriorating domestic corruption crisis. Kellogg’s exit leaves a significant void in the U.S. administration’s support for Ukraine, raising concerns about the country’s ability to confront these dual threats.