Politics · May 23, 1969

Vienna Convention on the Law of Treaties

57 years ago · Vienna, Austria

57th anniversary

The Vienna Convention on the Law of Treaties (VCLT) is an international agreement that regulates treaties among sovereign states. Known as the "treaty on treaties", the VCLT establishes comprehensive, operational guidelines, rules, and procedures for how treaties are drafted, defined, amended, and interpreted.

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The 58th anniversary falls on May 23, 2027.

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