You are correct.
Wiki:
Wesley Clark ordered that Blunt’s unit forcibly take the airport from the Russian contingent. However, after Blunt queried the order, Mike Jackson, Blunt’s superior officer, and Blunt himself refused to comply fearing greater consequences, with Jackson stating that they were “not going to start the Third World War” for Clark.
I can’t seem to find Yugoslavia on a map nowadays, but I think the Russians remember it.