President Trump recently imposed tariffs on the Heard and McDonald Islands, a remote Antarctic territory uninhabited by humans.
These islands, home to plentiful penguins and seals, are managed by Australia for environmental research and conservation efforts.
The tariffs, part of a broader trade war, are seen by some as a violation of the spirit of the Antarctic Treaty, which promotes peaceful cooperation.
Australia, the islands' administrator, remains silent while experts question the legality and logic of this unusual trade dispute.