If the Russians (as some of thr
End results; US losses in Conus of about 85%, Russian losses at almost 95%. We go back to the 1800s while you go back to the stone age. Our factories are scattered across the nation while yours are in primary large clumps of population.
You forgot about China, India or even EU. All-out war between the USA and Russia will make them happy heirs of the whole world.
There will be NO Nuclear exchange between the US and Russia. It's doomsday scenario. And if you are trying to scare the sheep of the Party of the Rumpers, us old Military People know better. You fear it more than we do. If you don't, you should.
Sure, there will be nuclear exchange between the US and Russia. Especially if Administration don't believe it, too. It's how the detterence works.
And no, it's not doomsday scenario. First of all - a counter force strike. When more than 80% of the defenders nuclear forces are destroyed - postattack blackmail. Then - negotiations, or protracted war, or total annihilation of the unlucky defender. Yes, it will be a catastrophe, but, definitely not a doomsday.
I've seen the programmed results of the first strike from both sides and then the second attack (there is no 3rd attack possible). Both sides use the Triad where you have zero chance of taking all sides of the Triad out during the initial attack. And what good does it do attacking sites already launched? But you have no choice since the failure rate will leave some missiles in the silos that couldn't initially be fired but can be repaired very quickly. So that requires both sides to have reserve ICMBs. Sometimes by design sometimes by faults.
The damage won't be from just the blast areas. The Fallout will make you wished you were in the blast area. But think of this, the after affects cures the Global Warming since instead of the gradual temp increase, you get a very fast temp decrease. In the United States, it renders the Grain Belt to what the Canadian Farm Lands are today. But the southern regions get more rain and cooler temps and in a couple of years become the new Grain Belt. Mexico actually benefits from it. But Brazil and Argentina gets murdered by it.
But Russia doesn't have a northern Grain Belt. It has a southern grain belt, a small one and it loses the high production there while China gets one hell of a boost.
AS for Factories, China doesn't get that affected but their population will die from the crap in the air. So they will have to take measures for that. But the factory may be taken out just by not having enough resources and people to keep it open. The US will lose probably around 25% of our Factories but the rest will be left unharmed since our factories and industries are spread. Russia has their industries, like their population centers, clustered so they will lost closer to 85% of their Factories and Manufacturing ability and have almost a 95% civilian loss rate versus the US loss rate of less than 85%.
You think it's cold in Siberian now?
Only an insane Sillyvillian believes anyone can win a nuclear exchange between Russia and the US. The Entire world loses. Of course, it helps if you are already in the Stone Age, but move over, you are going to get a lot of visitors.
First of all, there is no choice between war and peace (from the Russian point of view) in your scenario. There is the choice between "uncontrolled escalation" (leading to a regional war and then to all-out nuclear war, may be at the moment choosen by the Americans), and "preemptive strike" (at the moment choosen by the Russians).
There are three main goals of any government in a war:
1) protect its citizens;
2) punish the enemy;
3) to win the war and the further peace.
Most important, of course, is the first goal. Therefore, the first strike must be counterforce one. And there are rather reliable ways to kill near 80% of the nuclear arsenal by the first sudden strike.
Also, there are ways to intercept warheads, cruise missiles and planes with bombs.
Then, there are ways to decrease consequences of the nuclear exchange. For example, Russia has Ukraine and the whole Europe to take food from.
Nobody cares about the world. Actually, there is no any working climate models, both "Global warming" and "Nuclear winter" are nothing but poor pseudoscientic speculations. Anyway, winner will have resources of the whole world to deal with any problems, and loser will be dead.
Fallouts may be a problem but not catastrophic. Both Russia and the USA have more than enough lands to evacuate people.
How many factories will survive in Russia and the USA depends on their ability to prevent "free raids" by strategic (and medium) bombers with nuclear CMs and bombs. And for this ability (returning to discussion about F-35) sides need big amount of relatively cheap fighters and interceptors with long range air-to-air missiles. China will sell to Russians J-16 (or, may be, J-20) with PL-21, and may be, will help them to restore production of Su-35, MiG-31, Su-57 with a number of different types of AAMs, and what will sell the EU to the USA? Eurofighters with "MBDA Meteor"?