A couple of things about the western aid to Ukraine

M-777 Howitzer. (Wikipedia) 

Ukraine got military aid from the western alliance. And one of the key elements in that aid is the GPS homing grenades. Those very highly advanced grenades can adjust to detonate at a certain altitude and they are the most effective precise guide ammunition that artillery has ever used. 

The GPS must just have the information of the location of the target and the new systems can update that position very rapidly. So the modern GPS-guided grenade can also hit moving targets. The GPS systems that are connected to Javelin and other modern antitank weapons allow to shoot off those missiles over buildings and hills and the shooter can remain unseen. 

The GPS will guide the missile at the beginning of the trajectory. And then the optical seeker will start to search for targets. The fact is that the NATO or the controller of the GPS systems can observe every single GPS-guided weapon that is used in Ukraine. That means NATO can control where Ukraine uses those weapons. 

The microchips that are used in those GPS-guided grenades must resist a very powerful acceleration. The extremely powerful acceleration causes problems with the microchips. And that means the structure of the microchips must be very strong. Or they will crack. 

The problem with the imported microchips is that their molecular structure is well-known. There is the possibility that acoustic weapons will target those microchips. In that case, the resonance will crack those microchips. 

The weakness of the Ukrainian defense is that it cannot attack the Russian territory. The Russian side can make troop transportations and move the equipment from the Russian territory. So the Ukrainians cannot strike the airfields that are deep inside Russian territory. And the second thing is that Ukrainians cannot destroy factories where the Russians make their equipment. 

The Russian side can attack to entire Ukraine by using missiles and strategic bombers. The Russian artillery (maybe) was used with more dummy or traditional ammunition. And they probably save the laser-guided grenades for the high-priority targets. The problem with the Russian military is the lack of microchips that are used in smart weapons. 

One problem with the microchips that are bought from outer lands is that the materials are in the opponent's knowledge. That means the opponent can point acoustic weapons to those microchips. And that causes the cracks in those microchips.