It is worth mentioning that one of the main reason for these Russian gains is that the Russians copied the Western JDAM bombs and developed their own FAB-500 glide bomb. They are currently used to cause the most devastating attacks against Ukrainian defense lines and settlements near the front, the 500-, 1000- and 1500-kilogram winged bombs are released relatively safely 30-70 kilometers away from the front line by the Russian jets.
(A 1,500-kilogram winged bomb launched from a distance of 30 kilometers in case of a direct hit can destroy concrete bunkers up to ten meters deep, and it can destroy other ground targets within a 500-meter radius.)
There are two main ways to defend against such attacks. One option for the Ukrainians is to try to destroy the fighter jets already on the ground. Ukrainian drones are now able to reach targets 1,300 kilometers from the front, video recordings and satellite observations confirmed these successful attacks on Russian military airfields most heavily fortified with air defenses.
The other, more efficient option will be the F-16 fighter jets, these could solve the problem caused by Russian glide bombs by not letting the Russian fighter jets close enough to safely operate.
Analysts believe that the Russian military is trying to make progress at any cost until the appearance of the new Ukrainian fighter jet fleet (end of June).
After that, they will have to return to their "normal" fighting style.
On the scale of russian losses. A 15km² section of the frontline west of Avdiivka, 90 units of lost russian armoured vehicles just to advance 4km.
Spoiler Alert, click show to read:
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Ukraine's independence was protected by 5 different security guarantees, which Russia violated with the attack.
If we accept that Ukraine must lose territories, we will re-legitimize wars of conquest in Europe and we will make security guarantees meaningless.
Not gonna happen.