Definition - What does International Law mean?
International law is a combination of agreements and rules put in place by nations to use when working with one another. It acts as the foundation framework for any future agreements that pass between countries. There are some treaties that have been formed between various nations that act separate to but in addition to all other international law such as agreements between countries to help one another when needed in times of civil or international war or famine.
Justipedia explains International Law
International law is viewed as binding and breaches of it usually result in interaction by outside nations in one way or another, such as sending troops in to a country for security purposes.