Comment by lupusreal

How do you negotiate who gets to use their bomb for this? Whoever does it basically gets a free nuclear test that the other nuclear powers would probably be jealous of, but those same nuclear powers might also worry that their own bomb test, if they were permitted one test as compensation, might not go off without a hitch. They might therefore wish for there to be no nuclear detonations at all, to avoid the risk of being embarrassed. Furthermore there's also the issue of launch vehicle; some nuclear powers are more experienced with deep space missions than others, but fitting one country's bomb to another rocket may not be politically possible. America, maybe China, Russia or India could do it. The UK or France putting a nuke on an ESA rocket seems questionable. Pakistan and the other nuclear powers probably lack the requisite launch vehicle entirely but might publicly assert that the whole thing is a sham to violate the test / space weaponization bans.