International law. What is it? Well, perhaps it's best to start with what it's not.
It s not a single, official big book of laws. And it's not enforced by an international police.
And cases are not heard by a single court. No, it s a little more complicated than this.
Instead, it's a set of agreements and customs that most countries follow,
most of the time. These agreements cover the rights and duties of states about things like
war, human rights, trade and diplomacy. They can be treaties - written agreements
that countries sign like a contract. Or they can be what law calls 'customs' -
principles and ideas that many already follow. These agreements only apply to countries,
not companies or individuals. This can get complicated, because some corporations are bigger
than countries. All this means international law has to keep evolving, to fit our changing world.