It is generally held that states interact with one another in a state of anarchy, at least when it comes to national security. After defining international law, I show that this is not completely accurate. Reflecting a status quo bias, classic invasions and territorial aggrandizement through force are illegal. Since 1945, states that have undertaken classic invasions have generally been sanctioned, and no state has taken territory from another by force since 1976.
Norms Governing the Interstate Use of Force: Explaining the Status Quo Bias of International Law,
Emory L. J.
Available at: https://scholarlycommons.law.emory.edu/eilr/vol27/iss2/6