That would essentially mean two nations agreeing to resolve their intractable diplomatic differences with trial-by-combat, and to abide by the results. It's a l

That would essentially mean two nations agreeing to resolve their intractable diplomatic differences with trial-by-combat, and to abide by the results. It's a lovely notion, but in practice you can't really force a nation to change policy without a palpable threat to their population and/or infrastructure. So it boils down not to robots killing robots, but robots killing humans, while other robots try to stop them.