To try warcrimes as in Nuremberg. Requires a Victory over warcriminals. Or a favourable population pursuing supposed warcrimes.

Everything else is an assumption. It simply doesn't convince.

It has been the equivalent of slung mud since, hoping it sticks, hoping it convinces. These are often in aid of challenging any presumptions imposed. Like Sanctions. But without the opening statement has not been tried, and often does little to convince.