Don't break treaties and agreements you sign is a good differentiator. As I recall, Russia, the US and other countries guaranteed Ukraine when they agreed to n

Don't break treaties and agreements you sign is a good differentiator. As I recall, Russia, the US and other countries guaranteed Ukraine when they agreed to nuclear disarm. We've now seen what happens w/o nukes so it's going to be bloody difficult getting people to give them up and even prevent people from developing them (Germany? Japan,...)