The Greens have urged Labor to stand firm against increasingly unhinged calls for the acquisition or leasing of American nuclear attack submarines.
Australian Greens spokesperson assisting on Defence, Senator Scott Ludlam, said the Coalition and Labor MP Joel Fitzgibbon had "taken leave of their senses" on nuclear submarines.
"Labor should ignore these ill-conceived schemes. Leasing nuclear submarines from the United States would hamstring Australia's defence flexibility and foreign policy independence, and eliminate the possibility of local maintenance work in Australia.
"If the Coalition is that keen on absorbing the RAN into the US Navy, then long may they remain in opposition.
"Questions need to be asked as to why Tony Abbott's Coalition is so keen to see increased nuclear traffic in Australian ports."