Anthony Albanese and PNG Prime Minister James Marape have signed a landmark defence treaty in Canberra. Albanese says the Papua New Guinea-Australia mutual defence treaty will commit the countries to securing and shaping the future. He says it's Australia's first new alliance in more than 70 years and only the third in the nation's history. "This Treaty elevates the relationship between our two nations to the status of an alliance," Albanese has declared. "This alliance of equals reflects our co