In 1959, the Antarctica Treaty System was signed by twelve countries, and since then some other countries have been added.

http://en.wikipedia.org/wiki/Antarctic_Treaty_System

Military Bases on Antarctica
[wp_lightbox_prettyPhoto_anchor_text_video link=”https://www.youtube.com/watch?v=fikY5RfL2-g” width=”640″ height=”360″ text=”Click here to open the Youtube video” description=”Military Bases on Antarctica”]

THE SECRET LAND – Operation High Jump – Antarctica Expedition 1947
[wp_lightbox_prettyPhoto_anchor_text_video link=”https://www.youtube.com/watch?v=skjjfKwHFFs” width=”640″ height=”480″ text=”Click here to open the Youtube video” description=”Operation High Jump – Antarctica Expedition 1947″]