Why doesn't it? Ukraine isn't the victim. Crimea was traditionally Russian. It was given to Ukraine only when both countries were part of the Soviet Union and wouldn't have been if there had been any clue that Ukraine would try to deny Russia access to the port there. It's Russia's only warm water port. And, the majority in Crimea would rather be part of Russia.
I can't blame Putin at all for taking the action he did.
The Russian invasion in eastern Ukraine (Donbas, Luhansk) has resulted in 13,500 deaths and 1.5 million Ukrainians refugees.
https://en.wikipedia.org/wiki/War_in_Donbass
Crimea was, as long as you believe every Tartar wanted to belong to the Soviet Union. Arguable.
But the territory Putin claimed in West Ukraine was most definitely not traditionally "Russian", given the Soviets had purposefully resettled that area for 50 years with reliable 'White Russian Bolshevik' families -- it was a desirable AWARD -- and Putin should not be awarded for that, but rather deliberately driven out of eastern Ukraine and forced to eat the dust from 100 T-80s leaving Ukraine proper, with all the illegal Soviet emigres hanging off the sides.
Otherwise, anyone who accepts Putin's claim on the eastern Ukraine, must also by this absurd logic accept Mexico's ludicrous verbal claim on Aztlan now -- given that their 'resettlement' is a 100-year-old communist conquest scheme; or even moreso, the same claim that Democrats/Mex/OAN/UN will make by their internal US insurrection in 10 years, which will only be settled by a North American Union treaty from Karamela serving her 2nd term (after the 2-year term she deposed from Xiden coming up faster than you can think).
Freaklin Delanor Karamelavelt L. O. F. L.
You gotta think like a Demoncrat ALWAYS, ALWAYS look to their 5-year, 10-year, 50-year horizon.