Matthew Whitaker also added that "security guarantees that a peace deal would bring to Ukraine are done for all intents and purposes" NEW YORK, January 30. /TASS/. US Ambassador to NATO Matthew Whitaker said a settlement of the Ukrainian conflict is approaching. "We're getting closer and closer as we work through the very technical and complicated issues. You know, [US special envoy] Steve Witkoff has said that we're down to one issue, and that issue is territories. That’s the most complicated