What will happen next in the Ukraine?

I read recent articles from NEO and others:

• https://peoplesdispatch.org/2024/03/05/putins-nuclear-warning-is-direct-and-explicit/
• https://journal-neo.su/2024/03/05/ukraines-manpower-crisis-no-amount-of-money-or-aid-can-solve-it/
• https://scheerpost.com/2024/03/05/german-military-leak-reveals-british-soldiers-are-in-ukraine-helping-fire-storm-shadow-missiles/
• https://journal-neo.su/2024/02/15/fatal-flaws-undermine-americas-defense-industrial-base/

And they paint a very worrying picture. It seems the imperialists are unwilling to allow Russia to "win" - what they mean exactly by this; I'm not sure. Will they be pacified if Ukraine accepts a deal with the current lines as new borders? If not, it seems the only way they can realistically continue this is by using their own troops; which Putin will most likely see as an act of war and has said that he will be forced to use nuclear weapons. I don't know what will happen. The imperialists won't want to settle with Russia, because it will prove that NATO is a paper tiger and might lead to its dissolution as other member states pull out (but maybe this won't happen, several states have applied for membership recently). But surely they will not risk nuclear confrontation? Or do we get to the point where they keep pushing with incrementally more warmongering actions like sending advisors, weapons, "limited number" of troops, until Russia actually pushes the button? Then we get a scene with Putin negotiating with Biden on the phone to disarm the nuke in-flight? (there was a film about that right?)