What most naturally follows?

How to know the difference between soft law and hard law (international law )
Identify the type of document or agreement.
One simplistic distinction between soft law and hard law states that hard law is legally binding, while soft law is not. This distinction can lead scholars into a semantic debate over whether any agreement that isn't legally binding can rightfully be called a law.
Nonetheless, some types of agreements are automatically considered hard law. Treaties are a prime example of an agreement traditionally considered hard law by default.