Dissent voiced in an ongoing inquiry into Australia’s most ambitious nuclear submarine pact has laid bare growing uncertainty over US commitment, amid questions about the clarity of Canberra’s explanation of the Aukus deal to citizens. Under the trilateral security pact between Australia, the UK and the United States, Canberra will get eight nuclear-powered submarines at an estimated cost of up to A$368 billion (US$266 billion). Three used Virginia-class nuclear submarines will initially be...