Peregrine City 2018
Antarctica can refer to either the continent or the Vel-Jir nation that inhabits it.
Nation of Antarctica
Very little is known about Antarctica. With regards to human nations they have taken a very isolationist stance, only occasionally allowing visitors outside the official UN delegation. Alien vessels of various constructions are seen arriving and departing from the south pole, so it can be presumed they are in contact with other nations in local space. The Vel-Jir have informed the UN that outside Antarctica, interstellar convention dictates that Earth is still considered off-limits to alien visitation (being a pre-FTL world outside their presence).
Form of government: unknown
Ruler/head of government: unknown
Antarctic ambassador to UN: Ki-Jira
UN ambassador to Antarctica: Buckaroo Banzai