I mean I just posted Zelensky himself not believing it in January 2022. Outside of US intelligence, which should always be distrusted, a lot of people didn't think Russia would invade because it would be incredibly stupid for them to do so, and it was.
Comments
https://www.washingtonpost.com/outlook/2022/01/20/ukraine-russia-zelensky-interview/
Things are more nuanced than Western liberal "tankie" blanket labels.
Here's Oleksiy Danilov in January 2022 also doubting an invasion on the grounds of costs.