The thing that worries me about NK and Kim Jong Ill is not that he will use the weapons himself, but he will sell them to anyone with money. He needs money to feed his people and such. If he nukes anyone, he slits his own throat. Now if he sells his nukes and rockets to terrorists and they use them, well nobody is going to nuke him for that. Well George Sorros might, after all Sorros believes that the maker of a weapon should be libel for any crimes caused with that weapon. Anyway, that is what worries me about NK, they aren't showing off for the global community, they just might be showing off for potential buyers.
While Australia is about the size of the Continental US, their population is only around 21 Million. Compare that with the 304 Million of the US and 24 Million in Texas. You want them to step up and take the lead against Korea like they are a powerful country. Like Japan, their military is very defensive. They just don't have enough people to afford building a policing military. Yes, they were in Saudi when I served there to help fight Iraq (Gulf 1), but they aren't that well equipped to lead. Their military members are high caliber people all, but how much defense budget do you think 21 Million people can pay? If the US buys an $18 Million piece of equipment, that equates to less than 6 cents per person. In Australia, it costs each person almost 86 cents. Just because we can afford a big military, doesn't mean all our allies can.
I'm guessing by your "Fiddle dee dee" that you would have no problem paying at least twice as much for any product made in Japan so they could afford to start building a military from scratch. Also remember that Japan is a national debt of over $7 Trillion dollars. Military spending is a lot in this country and that is mainly to maintain the force. Building it from scratch would go far beyond that.
I guess your limited knowledge doesn't contain the old axiom from a few thousand years ago "1000 throats can be cut in one night by a running man with a knife." No doubt you would be totally surprised that if every single fire arm in the world were confiscated and destroyed, murder would still occur in the world.