The answer is staring you in the face but I'm not surprised you never bothered even to scratch the surface. The ICC doesn't replace national courts. Actually it encourages them to do their job. But sometimes the national courts can't settle it. For example the biggest point of an international court is that they should be able to settle international disputes. Get it? Inter-national. That's when the two parties are different countries, each with their own elected representatives and their own judges to decide in each country's favor. So what do you do then? You go to an international body which has no intrinsic bias or conflict of interest, ideally.
I see how you're trying to twist this into an act of "sovereignty" but not signing up is usually a sign that the respective country is a common perpetrator of exactly the type of crime the ICC would convict (war crimes, genocide, that type of thing). And wouldn't you know it, just check out the list ;).
I see how you're trying to twist this into an act of "sovereignty" but not signing up is usually a sign that the respective country is a common perpetrator of exactly the type of crime the ICC would convict (war crimes, genocide, that type of thing). And wouldn't you know it, just check out the list ;).