What are 'hard laws' in this context?

• A. Declarations
• B. Treaties are binding as hard laws
• C. Soft law guidelines
• D. Customary norms

Answer: (B)

Hard law means rules that create legally binding obligations that states must follow. The clearest example in this context is treaties. When states sign and ratify a treaty, they consent to be bound by its provisions, which establish specific rights and duties and are enforceable through international mechanisms. That binding, written duty is what makes treaties hard law.

By contrast, declarations are usually political statements that express intent rather than legal obligations. Soft law guidelines are non-binding and encourage certain behaviors without imposing formal duties. Customary norms are indeed binding, arising from long-standing practice and a sense of legal obligation, but they’re not created by a single written instrument, whereas treaties are the classic, formal embodiment of hard law.