Customary Law

The objective in customary law is to find evidence of state practice by using sources such as:

records of a state's foreign relations and diplomatic practices, as set forth in official statements, diplomatic exchanges;
a state's domestic court decisions;
a state's internal legislation concerning its international obligations;
newspaper reports of actions taken by states, statements made by government spokesmen to Parliament, to the press, at international conferences; and
in resolutions, declarations & legislative acts of intergovernmental organizations.