Ya know there's a country called Ukraine that's involved in this, right? They are people defending their country and they're going to do that with or without US support. And Ukraine will win in the end. Russia doesn't have enough to successfully occupy Ukraine against an organized resistance which is where things could go without military aid from the west.

While a resistance would ultimately be successful, it would take a decade or more. And it's likely a Russian occupation of Ukraine would involve genocide. Do you want that?

Sending military aid isn't about trying to change the outcome of the war. Russia's defeat is inevitable. The military aid is about helping Ukraine defeat Russia sooner, without the need for a prolonged resistance campaign, and that reduces the loss of life.