Ukraine v Russia who do you think will win?
I don't think that either of them
can win.
Ukraine can't defeat Russia, Russia's numerical advantage is too great and Russia has nuclear weapons.
And it's become increasingly clear that Russia can't defeat Ukraine. This second one comes as a surprise to everyone, including Putin. His military advisers told him it would take three days to seize Kyiv and overthrow Ukraine's regime. The US Pentagon estimated that it would take maybe six or seven days. Everyone was surprised by the imcompetence displayed by the Russian army and particularly by its commanders, who seem incapable of learning from their mistakes.
So the war has devolved from a fast-moving war of maneuver, into more of a frozen war of attrition. Russia has the advantage there in that they have a larger population and many thousands of tanks and artllery in storage that they can dust off and throw into battle. Ukraine is largely using the same old Russian equipment, but has far less of it. They only have something like 1/3 as many young men. And Ukraine's economy has been far more devastated by war than Russia's. So definite advantage-Russia in a war-of-attrition.
But Ukraine is receiving military supplies from Europe and the United States. Some of that equipment is proving to be superior to similar Russian equipment. In a few categories, such as ATGMs and long range precision artillery, Ukraine has developed a distinct advantage that they are using very skillfully.
That Western equipment isn't without its problems. Ukraine is receiving small numbers (often only a few dozen) of many different weapon types. Each requires its own skilled operators, technicians, ammunition and spare parts. Any army knows that having too many types and models of weapons in inventory is a logistics nightmare. So there's that.
And there's a possibility that Russia might start receiving Chinese weaponry sometime in the future. It would inevitably come with so many strings attached that the strings would resemble steel cables and would put Russia in China's debt in ways that Moscow doesn't want. China might demand below-market-rate access to Russian resources and raw materials in exchange for war aid. And it would inevitably move Russia towards being a Chinese client-state in ways Russia would never accept.
My own guess is that if the war continues as a protracted war-of-attrition for many months, the situation will gradually evolve in Russia's favor. But it would be in the interest of both Russia and Ukraine to reach some kind of negotiated settlement at some point.
Right now, there's little sign of that. Russia probably hopes to keep things going as the terms of negotiation gradually slip in their favor. And Ukraine is making maximalist demands that Russia withdraw from all of post-1989 Ukraine including Crimea. Which I don't think Russia will ever do. They will defend Crimea with nuclear weapons if need be, they have already said that's their red-line.
Bottom line: I think that we are in for maybe a year's more war, then a negotiated settlement of some kind where Russia keeps Crimea and Ukraine doesn't join nato.
It will be interesting to see if Putin is still in power in Moscow when that day comes, or whether he is removed in some kind of palace coup in the Kremlin. But much as the US would cheer that, chances are that he would just be replaced by a more competent Russian-nationalist hard-liner.