An easier solution is keep hitting Ukraine's one and only oil refinery at Kremenchuk and make sure it's not working. And keep hitting Ukraine's fuel depots. No fuel means Patriot PAC 3 and whatever else diesel fuel war machine cannot move. It leads to Ukraine's agricultural failure because no more fuel to run tractors and causes famine but depopulation is more subtle as people flee Ukraine due to hunger.
I was under the impression said refinery was already totaled, leading to Ukraine having fuel shortages already.
Honestly in order for Russia to win, they just need to keep attritioning Ukraine down. Once enough gaps are filled by completely unmotivated and weak conscripts, the whole front will quickly implode.
What Ukraine really needs is to pull back to defensible areas, but this might already be impossible due to fuel shortages and Russia controlling major roads through the air. At this point, the AFU needs to fight like the PVA, outmanuever blocks of Russian troops using night/terrain and use artillery and mortars, which would be the 2 equipment they need the most.
But this type of strategy demands a highly professional army, the one true equipment Ukraine needs the most is skilled infantrymen.
What is really telling negatively about Ukraine's situation is how we hear very very little about partisans in Russian captured territory helping Ukraine in the war. Fighting on land they're outgunned on and unloved by the locals, there isn't anything they can do. While they still had many professional troops, they likely should have withdrawn from the Donbass. But as often in far right regimes, nationalist politicians blocked military decisions that would have led to losing face.