A bearer of bad news, an enforcer of clear orders, a tough negotiator unfamiliar with the historical context of Ukrainian-Russian relations, but who at the same time could give new impetus to peace talks. That is how Ukrainian observers describing US Army Secretary Daniel Patrick Driscoll, who is expected to become US President Donald Trump's next special envoy to Ukraine, as General Keith Kellogg is due to step down from this position in early 2026.