CANBERRA Australia said Thursday it is "very confident" in the future of a U.S. agreement to equip its navy with a fleet of nuclear-powered submarines, after the Trump administration put the pact under review. The 2021 AUKUS deal joins Australia, the United Kingdom and the United States in a multi-decade effort to balance China's growing military might. It aims to arm Australia with a fleet of cutting-edge, nuclear-powered submarines from the United States and provides for cooperation in