The Soviets bankrupted themselves building massive inventories of tanks, all of which would require fuel.
How do you provide fuel, spare parts, spare engines, etc., for 30,000+ tanks that are supposed to be advancing west, when you also need to use scarce railroads to provide ammunition, food, medicine, and send wounded to the rear.
It is one thing to have tens and tens of thousands of tanks, an entirely different matter to be able to effectively employ them and provision them in the field.
Sending 10,000 tanks down a highway means a back-log of 50-100 miles for the column, if not 200-300 miles.
Sending them out cross-country style, spread out in successive waves, means excessive wear/tear, increased fuel requirements, and probably rebuilding or replacing the engine in a few hundred miles.
Soviet tanks were lightyears ahead of Western ones in terms of fuel efficiency,not like the Soviets expected many tanks of the first echelons to last long enough for it to become a serious issue.
And the Soviets had proven historically that they can do logistics properly,at least they didnt run out of fuel while advancing into the Third Reich,unlike some people.
ROK has had a near total/absolute advantage over DPRK in conventional forces for the last 20-30 years. Granted in the early 1980s this advantage was not as clear but it was developing.
If DPRK attacks ROK in 1982-1984, the result is not the easy/sweeping advance that DPRK made in 1950, but probably a grinding stalemate.
In a conventional match-up today, DPRK could not repel an ROK invasion of DPRK.
I think you put to much faith in fancy tech.
That is a common mistake in history.
A 1950s artillery shell will kill you just like a 1980s artillery shell,same goes for bullets.
The sheer amount of men and firepower the North Koreans can call upon,not even counting all those tunnels they dug into the south and the sleeper agents,means the ROK will be hard pressed to hold them back without huge US support.
And by huge US support i mean the level of hundreds of bombers and tactical nukes raining down on the North Koreans to keep killing them off before their mass of men and machines overwhelms the South.
That is highly speculative at best.
WP economies all collapsed without the added pressure of war. The USA was able to finance Vietnam and the maintenance of American forces around the world without collapsing.
The Soviet Union could not even sustain the war in Afghanistan.
The Soviet Union collapsed from inept political leadership driving the nation into the ground and wasting most of its economic options.
In case of WW3 all such issues take a back seat to the needs of total war,which is surprisingly good at eliminating things like luxuries or wages.
Also Western Corporations are going to be hit hard by their markets being outright anihilated.
Literally thousands of corporations across the Western World will go bankrupt because their markets are dissapearing and their consumer base is shrinking.
Vietnam isnt a valid comparison since it barely touched the civilian economy,in WW3 Europe wont have a civilian economy.
Yeah, and everybody thought WW1 would be over by Christmas.
Germans planned on finishing off the USSR in a campaign lasting no more than 12 weeks.
Timelines are usually broken/missed, and most plans don't survive first contact with the enemy.
Neither the Kaiser nor Hitler had the ability to incinerate entire cities with conventional means in the span of a few hours.
NATO forces facing the Warsaw Pact that arent in bunkers or hidding will be obliterated.
Sure many Warsaw Pact troops will be obliterated by NATO counter-fire,but the Warsaw Pact got a hell of a lot more dudes to waste in the early battles,NATO does not.