A treaty is an international agreement, generally concluded in writing, between two or more subjects of international law, in which they express their joint will to assume obligations to assume governed by international law or to renounce rights whether this agreement is embodied in a single instrument or in two or more related instruments and whatever its particular designation. It’s a formally concluded or ratified agreement between states. It’s used for formal agreements between states whose subject matter and provisions are governed by international law.
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