Entered into force April 8, 1987 for X-2 thru X-8, November 6, 1989 for X-1 and X-9.

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.”

Download status lists [128 KB]

U.S. Department of State

The Lessons of 1989: Freedom and Our Future