The US has been propping up the Ukrainian military in foreign aid since before Russia invaded this time. Russia has been involved in a series of pushes and the US was selling older military tech that outstripped Ukrainian resources at a loss prior to this most recent invasion.

The whole Hunter Biden/ impeachment thing? That was over the US aid package to Ukraine. It was 250M in funding for equipment and training. We'd been sending Javelin launchers since before the war started.

We've sent billions in advanced weaponry and medical aid and it has predated the latest Russian invasion. Yes, it takes time to send weaponry over but we've been training Ukrainian forces since before the war started which is one of many reasons they were able to outlast the first two weeks and allow additional aid to arrive. Zelenskyy didn't run and the military held Kyiv. Part of that was they already had a limited number of Javelin launchers and other weaponry to stop armored advances. The stockpile has exploded in the last year, sure.

The US backing of Ukraine isn't new. There's absolutely standing to say we've done quite a bit without actually having soldiers directly engaged.