And most of that money is flowing back. If the US government buys American weapons and ships them to Ukraine, then the money circulates in the US and leads arms manufacturers to employ people.

With Russia at war with Ukraine, Europeans have turned to US fossil imports and funneling money back to the US.

The arms in Ukraine then hurt the Russian military and degrade it. So it is effectively spend to further American goals even then.

The mental gymnastics performed to make it seem like a loss of US taxpayer money is really insane.