The war is being fought in Ukrainian territory and the cities and buildings have been destroyed. Ukraine will never be the same as before with 4 million people fleeing their homes.
Why did Soviet Union create 15 different countries after break-up in 1991 in the first place? War is a massive loss to both sides. No body wins a war, as there is massive killing of defence personnel and civilians to achieve the stipulated goal. Basically, it is a fight to gain control over a territory and people. Human beings have been fighting for supremacy ever since the creation of mankind.