Puhlease,
American public attention span is that of a goldfish. In 2 years you have elections and in-between, as well as soon after you will find plenty other controversies and causes to gnaw on.
Don't go turning American public opinion into some sort of a thing, when you have a chunk of country ready to drink bleach or cow dewormer and other chunk thinks US is Avengers or Beacon of Freedom and happiness in the world, because some dude said so. Just to show how easy your unwashed masses are to manipulate.
That's kinda hilarious even.
"Life is one long series of problems to solve. The more you solve, the better a man you become.... Tribulations spawn in life and over and over again we must stand our ground and face them."
Hey, it was inject bleach and horse dewormer...
...wait, what was I saying? <glub glub>
...
But seriously, I'm not discounting that the average American's attention span to political drama is... somewhat limited. But that doesn't mean that it's as non-existent as you're pretending. Nor is the situation the same this time; even a casual perusal of headlines can tell you as much.
R.I.P. Democracy
"The difference between stupidity
and genius is that genius has its limits."
--Alexandre Dumas-fils
Likely, but both sides will constantly be looking for an out.
Cold War 2.0 is no-one's interest. Russia is not USSR, it can't quite detach itself from West and West does not really want to go another decade of Soviet-like bullshit either.
It is a given that eventually there will be an agreement.
No, people have, they just don't want to go that route unless they absolutely have to and can justify it because, if you cut the head off the snake, you have to worry about what kinda head grows back to replace it.
Go at him economically, which hits hard but less direct, and a less sneaky alternative to Russia's stuff with Trump, Brexit, and the likes, if push comes to shove and you actually think he will try for the nukes, you take him out personally, just make sure you can justify it to the world and the people of Russia to make sure that whomever tries to replace him doesn't try to do the same.
Like I said, there isn't a man alive who can't be stopped, even if they can't be controlled. Even the uncontrolled have to work within the options they have available to them.
I have a question that I would like an answer to.
Let's assume for the sake of argument, however unlikely it might be to some of you, that Russia in half a year conquers all of Ukraine.
What do we then with Russia? Specifically what does the west when it comes to sanctions of occupied Ukraine, remember that with Crimea and Donbass there are vast sanctions on their entirety on virtually every aspect, but are we really going to see those kind of sanctions extended to an entire country of 40 million people and condemn them to misery?
"Life is one long series of problems to solve. The more you solve, the better a man you become.... Tribulations spawn in life and over and over again we must stand our ground and face them."
R.I.P. Democracy
"The difference between stupidity
and genius is that genius has its limits."
--Alexandre Dumas-fils
It is even difficult to go after him economically or pound him with sanctions considering he is INSANE. For now they're working, yes, but when they eventually add up to cripple him to fuckedville forever, who is to say then he won't just decide "fuck it?" That's why the situation is terrifying.
You say no lunatic in history is unable to be stopped. Putin is the first one with nukes and threatening to use them.
Oh sorry, gotta recheck Tuck's recommendations on correct consumption of the miracle cure.
For sure people won't go ahead and view Russia favorably in US, but you dismiss just how much you have people ready to swallow whatever their fav political force feeds them hook line and sinker in US.
If in two-three years whoever has the lead will start working towards "reset" - you can bet they will eventually sell it, because there are plenty drones both sides simping their Big Kahuna unconditionally.
No. No, I really don't.
And for what benefit would they engender this "reset" if not public opinion? What does it gain the politicians to have to use the mechanisms of politics to influence the "drones" enough to do so?
There's very little impetus to change it.
R.I.P. Democracy
"The difference between stupidity
and genius is that genius has its limits."
--Alexandre Dumas-fils
That's like reading the cards or crystal ball. Who knows what it will be - likely yes, you'd have to sanction it all, because you certainly can't sanction Russia with one hand and then effectively spam it with humanitarian aid the other (ok yes North Korea, but not a good example IMO).
I do think, however, there is snowball's chance in hell Russia manages to take over Ukraine in that fashion this time around.

As a rule, submissiveness leads to more abuse and suffering than defiance. Still some people would choose to live as a slave while other people would choose to die fighting for their freedom. Ukrainians as a people were fighting for their freedom during majority of the last 500 years, and they made the same choice again a month ago.
There's an entire gamut of options of course, ranging from "fight a guerrilla war after hypothetical full occupation, until the enemy breaks and leaves" to "surrender at the moment of aggression" which already didn't happen, with a dozen of options I could list in between. Surrender is not really an option for Zelensky at this stage, though.
Yeah Ukraine will likely have to compromise, and I even outlined a reasonable compromise 3 weeks ago - Ukraine stays out of NATO, Russia withdraws beyond internationally recognized borders of Ukraine. That is a compromise, not a surrender.
The same benefit Dems engendered with 2010 reset.
No Cold War, lower energy prices, preparing tackle big bad China, turning new page, etc etc.
Really not their first rodeo. How to make friends with the enemy 101 - find even scarier enemy.
Half of the country will instantly be like "hmm, so I am going to pay 20% less for gas now? Sweet..."
It's simply that - in the end people care mostly about what they get out of it and there is plenty merit.
The beautiful thing about the sanctions is that they don’t require the American citizen to remember them at all to keep working. Every man, woman and child in America could forget what Ukraine is tomorrow, but so long as the government sees it as a way to turn the knife in Russia’s side until they kowtow Back to their proper place in the world, the sanctions will just keep doing their thing.
And hey. At least the Americans don’t think they’re invading a sovereign neighboring country to get rid of nazis or secret chemical plants or “rescuing” same-language speakers.
Who would be so dumb to believe that sorry excuse for a war?
“Do not lose time on daily trivialities. Do not dwell on petty detail. For all of these things melt away and drift apart within the obscure traffic of time. Live well and live broadly. You are alive and living now. Now is the envy of all of the dead.” ~ Emily3, World of Tomorrow
Words to live by.
You give him too much credit, it's already proven that it's not too hard to get him economically, he is hurting from it already pretty badly. And the moment Putin says "Fuck It" he doesn't have a giant red button he just gets to push and launch stuff, he actually has to give the orders to others who actually have to control the stuff and will know that they are killing their own families if they follow that order.
Putin gives that order, there is a good chance he will personally end up killed before he sees it followed. No matter how crazy he wants to be, the world will largely outlive him, Putin seems to love Russia and fantasize about the return of it's power and he knows that doing that removes Russia from the world stage permanently.