Русско-англо-русский юридический словарь

International law is the set of rules generally regarded and accepted as binding in relations between states and between nations. (Wikipedia)

Military discipline is the set of rules that are ingrained in soldiers through their training and ensures compliance to orders to create a cohesive military unit. In most countries, each military body has its own authority responsible for military discipline. (ask.com)

A black market, underground economy, or shadow economy is a market characterized by some form of noncompliant behavior with an institutional set of rules. (Wikipedia)

The law of contract is a set of rules governing the relationship, content and validity of an agreement between two or more persons (individuals, companies or other institution) regarding the sale of goods, provision of services or exchange of interests or ownership. (In Brief.co.uk)