They removed him illegally! They didn’t impeach him because he didn’t actually commit an impeachable offense, they just voted to get rid of him. It was an unconstitutional move that had the fullthroated support and backing of the EU and NATO, hence, a Western-backed coup. Russia saw a Western backed coup on its boarder and saw its geopolitical rivals getting ready to plant their flag right against its border, so it reacted in an extreme and unjustified (though understandable) way. Russia was provoked into overextending itself and now the US/NATO strategy is to bleed Russia dry by forcing them to spend all of their resources on this war while hitting them with sanctions.
Except that isn’t happening, and now the war could last for years. Decades. Maybe forever, and it’ll be like the Korean War with a demilitarized zone but no peace agreement.
How many Ukrainians are you willing to sacrifice to defeat Russia?