Hold on, back up. Refusing some nobody's out-of-the-blue offer to spy for you is a CB? Damned if you do, damned if you don't, eh? Just send someone to ask, if they say yes, it's a CB, if they say no, it's still a CB.
But, as has been pointed out, CBs have traditionally been flimsy. If you didn't want war, you would have talked. If you wanted war, you attack. That's always been how this world works. Still, good to see CN going back to old school roots here, where we can argue for pages upon pages about CBs. Feels good.