You are poorly informed.

Ukraine's army is NATO trained and the largest army in Europe.

Ukraine is 1.4X bigger than Vietnam.

They've mobilized about five times now and are supported by the big eleophant in the room -- US satellite and awac live intel.

So Ukrainians have a huge advantage that at any moment, they know what the Russians/DPR/LPR are going to do.

And they can fire off some types of munitions without worry of counter battery since they don't have to turn their radars on. They're getting data from US global hawks/sats/awacs.

Ukraine, if they went up against the US would slaughter US troops and down F35s. Ukrainians are the toughest white people on planet Earth with Russians a close second and Poles a close third.