International law

International law, deals with the relationships between states, or between persons or entities in different states. It sub-divides into "public international law" and private international law (also called conflict of laws). When used without an adjective, "international law" generally refers to "public international law." Thus, public international law is defined as "the system of law which regulates the activities of entities possessing international personality." This article will concentrate on this aspect.

Enforcement by states

Apart from a state's natural inclination to uphold certain norms, the force of international law has always come from the pressure that states put upon one another to behave consistently and to honor their obligations. As with any system of law, many violations of international law obligations are overlooked. If addressed, it is almost always purely through diplomacy and the consequences upon an offending state's reputation. Though violations may be common in fact, states try to avoid the appearance of having disregarded international obligations.

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States may also unilaterally adopt sanctions against one another such as the severance of economic or diplomatic ties, or through reciprocal action. In some cases, domestic courts may render judgment against a foreign state (the realm of private international law) for an injury, though this is a complicated area of law where international law intersects with domestic law.

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States have the right to employ force in self-defense against an offending state that has used force to attack its territory or political independence. States may also use force in collective self-defense, where force is used against another state. The state that force is used against must authorize the participation of third-states in its self-defense. This right is recognized in the United Nations Charter.

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