. "2 U.S. Strategic Interests and Missions in the Polar Regions." Polar Icebreakers in a Changing World: An Assessment of U.S. Needs. Washington, DC: The National Academies Press, 2007.
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Polar Icebreakers in a Changing World: An Assessment of U.S. Needs
TABLE 2.1 List of Signatories to the Antarctic Treaty
NOTE: OS = original signatory; CP = consultative party; AS = acceding state; dates represent the dates of ratification of the treaty by the original signatories or the dates of accession or succession by other states.
aKnown as the Soviet Union until December 1990.
bSucceeded to the Treaty as part of Czechoslovakia which separated into two republics on January 1, 1993.
cBecame united with Federal Republic of Germany on October 3, 1990 (now known as Germany).
dAcceded to the Treaty after independence from Australia.