War does indeed tend to be "the complete cessation of what we think of as normal morality, and it is the sanction of mass murder" - but that should never be accepted as right, and there is value in the concept of war crime, underpinned by theoretically binding international law.

Nor is it solely a matter of "victor's justice" - some Croatians as well as Serbs, and Bosnians of all varieties, have found themselves facing trial for their part in the butchery of a few years back.

At least it is now possible to force even high-up participants in activities that fall into that category to be careful where they go travel outside their own safe-haven in their own countries, whether that is Israel, the USA, the UK, or Russia.