We don’t get to wash our hands of this. Particularly when we have neither brought them to justice nor recognized any transnational authority’s jurisdiction to do so.
It leads to family feuds, tribal war that lasts centuries or even millennia and it's a very likely trigger for WW3.
There are inter-group grievances that will never be settled to the satisfaction of all parties. Not only that, but they're so inflammatory that even attempting to resolve the conflicts of centuries past, leads to further anger and cycles of violence going forward.
People need to be held accountable for their own actions, not the actions of others who look like them, have the same family name, live on the same patch of land or worship the same god(s).
I advocate for the peaceful dissolution of the federal government because I believe it's unfixable and unaccountable.
I believe the de-facto two-party system is illegitimate.
It is today's kids who must grow up ready to live in the absence of a powerful state. Even if they aren't culpable, they are responsible.