Everything Creepy Joe Biden touches turns to shit and he is ruining anyone who is working with him or places trust in him.
In fairness, the result would have been the same under Trump. Russia would not have permitted Ukraine in NATO, no matter who was president. And Trump would not have been dumb enough to challenge Russia.
The only difference between Trump and Biden on this, is that under Trump, the crisis would never have arisen in the first place. Whereas under Biden, the Neocons likely made moves on Ukraine, which necessitated a loud objection from Russia.