What exactly are the stated objectives of the 2022 Russian invasion of Ukraine?

Context: I could've sworn in war articles on Wikipedia, there was like a section on 'Objectives' either in the sidebar or in the main article. I must be remembering wrong because I can't find such in examples like WW2 and Iraq/2nd Gulf War. But anyway, I can always find the word 'objective' in the article. As for 2022 Russian invasion of Ukraine and Russo-Ukrainian War, I cannot quite find such a word 'objective'.

Question: What are Russia's stated objectives for their 2022 invasion of Ukraine? In other words, has Putin expressed what his specific end goals are? Does Putin want to kill Zelenskyy? Or make Zelenskyy surrender?

Notes:

1. I am asking about stated objectives (such as given in a speech or as part of marching orders) rather than speculation about "true" motives or hidden agendas.

2. The answers thus far show the political objectives, which are of course part of what I was asking, but what exactly are the military objectives of the invasion: like bomb certain buildings or places until Zelenskyy says like 'ok fine, you win. We'll talk' ? I mean, I don't see how for instance the invasion is going to (directly) ensure 'protection for the Russian language in Ukraine.'