Explainer

What’s at Stake If Trump Scraps Security Pact With UK, Australia

The Virginia-class USS Minnesota submarine off the coast of Western Australia in March.Photographer: Colin Murty/AFP/Getty Images

The Trump administration has launched a review into the Aukus defense pact that the US signed with Australia and the UK in 2021 to counter China’s military expansion in the Indo-Pacific region.

Central to the agreement is a controversial project — expected to cost hundreds of billions of dollars — to help Australia develop a fleet of nuclear-powered submarines over a 30-year period.