I can understand reloading the equipment, but the US publicly committing to first use of nuclear weapons seems unlikely, especially without Congressional authorization. Such would create a furor that might force us into a position that hampers our options more than they are now. I can't imagine that the Pentagon would leak such a story either.
He is the commander in Chief and nothing in the constiution or in law procribes differently. Period.
As far as letting such states enjoy the benefits of free trade to arm themselves to the teeth, well..
Actually, a preemptive attack with nukes was always what SAC intended. If they had hard evidence that the Soviets were about to launch, the B-52s would leave their Fail-Safe points and the missiles would launch from the silos and submarines.