Prime Minister Scott Morrison is fond of describing Papua New Guinea as “family”. He did so recently when announcing Australia’s assistance with PNG’s COVID-19 outbreak. The urgent support for PNG in the form of vaccines, testing kits, medical personnel and training was “in Australia’s interests”, Morrison said, because it threatens the health of Australians, “but equally our PNG family who are so dear to us”. These familial bonds are “born of history and geography”. PNG is Australia’s closest neighbour. Only 4 kilometres separate the two countries in the Torres Strait, a fluid border that has been redefined numerous times (most recently in 1985). It is currently closed due to the COVID outbreak.