I presume they’d export versions without the ‘nuclear wiring’ on the aircraft so to speak.Seeing that the B-2 along with the B-52 are both counted in the New Start treaty how would the B-21 be treated especially if Australia and or the United Kingdom flew them? Would those two countries need to be included in the treaty? How would an opponent know in a time of crisis the nationally of a B-21 headed their way and whether or not it had nukes on board? The last heavy bomber the U.S. exported was the B-29. I don't see the B-21 being exported.