Which side do you expect them to fight for ?
I don’t think they would reliably fight for either or any side, just themselves. This is the irony of my over the top, ridiculous, straw man posting. Desperate people and nations, try desperate things. Doesn’t mean they will work. Unless the Ukes miraculously develop and deploy some magical super weapon,they are done. Demographics. Money. History all not on their side here.
What further desperate things might happen though, before the guns fall silent over there?