Why didn't they do that with Kiev? Why is Odessa still standing? You mean to tell me that it took them three months just to destroy one city? At this rate, they'll take Ukraine in 2026.
You obviously don't have a clue about Putin's strategy and Russian army tactics concerning the special military operation in Ukraine.
Putin has been very methodical in his planning and execution in his humanitarian foray into Ukraine.
He had the Russian military first attack the outskirts of Kyiv.
This served two purposes.
#1 Give Zelensky a few days to figure out he couldn't win the war and meet Putin's demands for a withdrawal.
#2. A fain to draw Ukrainian forces from the Donbas region in an effort to protect Kyiv, thereby making the Russia army thrust into the Donbas easier.
Putin has no intention of reducing Kyiv into rubble like he's done to Mariupol and other cities.
Kyiv has great historical and religious significance to the Russian people who do not want to see it destroyed.
Thus, Putin has backed off further attacks on Kyiv unless he's left with no other option.
The port city of Odessa will be next once the Donbas region is securely in Russian control. The the Russian army will keep heading west from Crimea, in order to annex the entire north coast of the Black Sea and the long thin sliver of land between Moldova and Ukraine called Transnistria.