Entered into force May 26, 1972 for V-1 thru V-4 and V-9, July 31, 1972 for V-7 and V-8, November 1, 1982 for V-5 through V-6.

Article IX, paragraph 4, of the Antarctic Treaty provides that recommended measures “shall become effective when approved by all the Contracting Parties whose representatives were entitled to participate in the meetings held to consider those measures.”

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U.S. Department of State

The Lessons of 1989: Freedom and Our Future