The United States will only send used nuclear-powered submarines to Australia as part of an agreement to "streamline" the AUKUS defence deal in a move branded on Sunday as a "cost-effective" by Defence… Australia will only receive used nuclear-powered submarines from the United States as part of an agreement to "streamline" the AUKUS deal, with the move branded on Sunday as a "cost-effective" measure by Defence Minister Richard Marles. The two natio... [2381 chars]