It’s not likely Russia can roll over all of Ukraine militarily. But it can bludgeon the country into submission with its attacks on civilian infrastructure over a long period. Trumps actions are helping that to happen.
The war was started by Putin, because he couldn’t bring Ukraine under his influence , only capitulation by the Ukraine people then would have stoped the war, as is the case now. Once the money and intelligence is turned off for Ukraine , and oil deals and the stopping of sanctions is implemented for Russia, it’s more possible Russia, gets another step to getting a result it wants. Completely at odds with what his so called allies would want.
It’s a costly situation and I repeat myself when I say that, If Europe does not oppose this invasion with more than just words then it becomes not just OK for Ukraine, to be invaded but any other country in Europe. It’s the alliance the US has with Europe that is questioned if they aid Russia,in any way.
We all have high energy bills , lots of reasons for that, most just happen to have Trumps fingers all over them.