I said that so long as there are nuclear weapons, the only utility of nuclear weapons is to deter their use by others. So the logical first step for NATO is to ditch its first use—its so-called “flexible response”—and ditch its statement, its posture, that nuclear weapons are needed by NATO to prevent war, and say that while nuclear weapons are in existence, the only utility of nuclear weapons is to deter their use by others.
On November 22nd, 2017. See this statement in context.