Biden can stop it today if he wants, either by withholding weapons or by direct intervention (although an embargo would probably suffice). But the fact that the US is STILL sending weapons is nothing less than direct complicity. People have been shot for less during the Nuremberg Trials.
I suspect it’s mostly temporary, I used to have a heavy Amsterdam accent when I was young because of the day care I went too, but it’s completely gone. I do still have a fondness for it though.