First they came for the socialists, and I did not speak out— Because I was not a socialist.
Then they came for the trade unionists, and I did not speak out— Because I was not a trade unionist.
Then they came for the Jews, and I did not speak out— Because I was not a Jew.
Then they came for me—and there was no one left to speak for me.
The risk for not helping the Ukrainians is that this will set precedence the collapse of the international order and institution that prevented major wars since World War 2, because the international charter explicitly forbids violating another nation's sovereignty. If no one speaks out or support Ukraine, then it will be you and your loved ones next in the next world war.