A top Ukrainian delegation will arrive in the United States ahead of special envoy Steve Witkoff’s meeting with top Russian officials in Moscow.

Ukrainian President Volodymyr Zelensky announced on Saturday that Secretary of the National Security and Defense Council of Ukraine Rustem Umerov would lead the delegation, marking the replacement of the former head of the Ukrainian president’s office, Andriy Yermak, who had led diplomatic delegations to the U.S. in the past. Umerov had to be chosen quickly after the trusted Yermak resigned, following his implication in a massive corruption scandal.