Trump imposes tariffs on uninhabited Heard and McDonald Islands near Antarctica

Australian prime minister surprised after external territories - including tiny Norfolk Island and remote islands home to penguins - targeted by US president

A group of barren, uninhabited volcanic islands near Antarctica, covered in glaciers and home to penguins, have been swept up in Donald Trump's trade war, as the US president hit them with a 10% tariff on goods.

Heard Island and McDonald Islands, which form an external territory of Australia, are among the remotest places on earth, accessible only via a two-week boat voyage from Perth on Australia's west coast. They are completely uninhabited, with the last visit from people believed to be nearly 10 years ago.