The Ukraine War - A Longer-term Prediction - The Poles will put Troops on the Ground.

I find it highly likely that before the Ukraine war is over the Poles will put troops on the ground. Historically, when The Ukraine and Belarus have not been Russian territory, then they have most likely been Polish territory. The Poles, naturally, would like to regain some of their 'lost' eastern lands. Consequently, the current conflict in Ukraine is far too good an opportunity for them to miss. Taking land requires deploying troops so expect to see the Poles on the ground in The Ukraine. Poland's recent orders of massive amounts of military equipment, including 1000 K2 tanks from Korea, indicate the line of their thinking.
Ideally, the Poles would hope to send their troops in with the consent of Ukrainians. Arriving as the saviours when the war had got to the point that Ukraine was on the verge of total defeat. Although self-interested, it would still be a brave move to stand face-to-face with the Russians, but the Poles do have an ace up their sleeve. They can offer the Russians a complete end to the war in return for dividing Ukrainian territory between them; afterall, even today, if Poland suddenly closed its border to any trans-shipment of armaments then the Ukraine War would be over. The Hungarians are already closed to arms shipments. Moldavia is blocked from shipping arms by the fact that its border with The Ukraine is controlled by the breakaway republic of Transniestria which is strongly pro-Russian, to the extent of having a Russian base on its soil. And the Romanians have only some small roads through the thick of the Carpathian mountains to use after the Russians destroyed the bridges on the lower Dniestr River. That leaves tiny Slovakia as their only significant import route and Slovakia's main opposition party is already campaigning against their involvement in the war.
And then, of course, the Poles might be able to win the backing of the USA for their move. That would constitute another huge Ace.
Apparently, the former Polish foreign minister has said that it has been discussed at high levels whether if Ukraine became a Polish 'Protectorate' it would be covered by Article 5 of the NATO constitution requiring all NATO members to come to its defense.
Of course, talk of Polish protectorates only makes sense if the Ukrainians are losing the war and badly. If Ukraine looks like being the eventual winner then look out for the Poles finding reasons to move into Belarus. Were Belarus to send troops into Ukraine the Poles might consider it enough of a justification for them to attack Belarus. The Belarussians may not be simply looking for excuses not to enter Ukraine when they tell the Russians they need their troops to guard their own borders with the West. Putin, too, might well be deliberately wanting to keep Belarus out of harm's way, in order not to give the Poles an excuse to get involved.
Indeed, the only outcome where I do not see Polish troops on the ground, is if something like the current stalemate continues, where Ukraine is still strong enough to defend itself, but the Russians are not destroyed either. If such a stalemate is quickly followed by a ceasefire agreement then the Poles might miss their chance. I use the word 'quickly' deliberately, because it seems unlikely that a stalemate could go on for many years, eventually one side or the other should gain the upper hand as they are too dis-similar in capabilities. So it seems likely that the Poles will get their chance and if the Americans and Ukrainians aren't willing to negotiate with the Russians, the Poles, I suspect will be happy to, as for them a negotiation over Ukraine will not be zero sum; but rather win: win.