(FILES) US President Donald Trump shakes hands with Keith Kellogg (R) after announcing him as chief of staff to national security adviser US Army Lieutenant General H.R. McMaster at his Mar-a-Lago resort in Palm Beach, Florida, on February 20, 2017. On November 27, 2024, US President-elect Donald Trump announced that General Keith Kellogg is his nominee to be Assistant to the President and Special Envoy for Ukraine and Russia. (Photo by NICHOLAS KAMM / AFP)