Daryl while I agree with your statements, your example of N. Korea starving due to Nuclear weapons is horrific.
N. Korea is not starving due to Nuclear weapons eating up manpower. They do not have fuel for mechanized farming(or the machines). They do not have fuel to create fertilizers for efficient mechanized farming. They are literally collecting human $hit and spreading on the fields by hand along with harvesting by HAND.
It is why N. Korea threatens nuclear bombardment, etc every "x" spring to get another "free" shipment of fuel as they have no other barter/threat to obtain the fuel needed to not starve. They used to obtain this "free" fuel from the Soviet Union. Well we all know what happened in 1990... What most do not know, or do not remember, is that when this happened and the fuel quit flowing,
N. Korea had a quarter million to 3 million people starve to death, till we started sending them fuel. Yea, there were other factors(drought), but the driving factor for starvation is their centralized farming that required
fuel. N. Korea has no domestic source for oil/fuel.
Lets look at a vastly superior example: Fall of Soviet Union. Even this, "fall", took decades. They accomplished a lot by effectively conquering millions of people and turning them into slaves, but this only lasted for "so" long before rebellion, anarchy, took over.
In some respects, Germany during WWII could be used, but honestly does not count as they were severely limited due to actual number of men/fuel as they were leading the tech edge but failed in the mass production of military equipment. It was not due to $$$. Not even close.
Short term, say, half a decade to a decade, Skimpers point about finances mean nothing, is a very prudent point. BUT, this position ONLY holds if the populace is BEHIND the government. WWII, Japan/Germany had no problem with finances during the war. Leading up TO the war, when they had to actually PAY for outside resources, they did, but during the war? Nope. Look at post war Germany/Japan, yes the allies implemented top down executive orders, constitution, etc, but honestly the common populace were completely worn out by war and didn't care who was in charge, as long as they were not at war anymore. You have to remember that by 1945, both Japan/Germany had been on a constant war footing for 10+ years(more in Japan's case than Germany's). In both instances $$$ meant nothing as their internal economies simply "printed money". This only last a short time, before the propaganda does not work anymore. Then it all falls apart.
Want another example? There are hundreds. Fall of Rome, ACW, etc, just about any war for that matter. It is only when a country is dependent on outside sources that $$$ becomes a time critical issue. Less than a decade we are talking about. Local economies will fall back on the barter system. Now you can argue that the barter system is less efficient and because of this causes efficiency problems as a % of the population GDP.
Now that I will agree 100% with.
Ugg sorry for rambling post, if I had more time it would be shorter. Gotta go to bed.