Biden's boss (Obama) - Putin invades Crimea AND Donbas and backs Assad's use of chem-weaps in Syria. US does nothing.
Trump - US increases arms sales to Japan to bolster their claim over islands disputed with Russia (pulling Russia's forces onto two fronts), arms Ukrainians (much to the objection of the Democrats), and bombs a Russian air base in Syria when Russia uses further chem-weaps. Russia gets really quiet, really fast.
Biden - US shows laughable weakness by surrendering in Afghanistan. Russia steps up presence in Donbas and moves troops to Ukraine's border. Biden talks big but insists he is afraid of a conflict with Russia. Russia invades, Biden places impotent and toothless "sanctions" that have yet to stop a single Russian bullet or kill a single Russian soldier, but does nothing.
So yeah, facts prove Trump was tougher on Putin than Biden was. But I'm just a US combat vet who lives in Ukraine, so what do I know about the reality in Ukraine, right?