The Australian government is being urged to rethink its opposition to a new international treaty banning nuclear weapons, with a leading campaigner warning of the “indiscriminate destructiveness” of such arms.
Beatrice Fihn, the head of the Nobel prize-winning International Campaign to Abolish Nuclear Weapons (Ican), will use a speech in Tasmania on Thursday to implore the government to heed strong public support for joining the treaty.
“Change is not only possible; it’s inevitable,” Fihn will say when she presents the annual Red Cross Oration at the University of Tasmania.
The Australian government has not joined the Treaty on the Prohibition of Nuclear Weapons, a relatively new agreement that requires parties not to develop, test, produce, acquire, possess, stockpile, use or threaten to use nuclear weapons.
So far, the treaty has been signed by 86 countries, of which 54 have formally ratified it – but it has been snubbed by the nuclear weapons states including the US, Russia and China.
“Australia does not support the Treaty on the Prohibition of Nuclear Weapons,” a spokesperson for the Department of Foreign Affairs and Trade said on Wednesday.
The Australian government argues the new treaty “would not eliminate a single nuclear weapon” because none of the nuclear weapons states have signed it and because it “ignores the realities of the global security environment”.
The government also says the treaty would be inconsistent with its US alliance obligations. However, campaigners point out that several US allies, such as New Zealand, Thailand and the Philippines, have already ratified the treaty.
Fihn, who is based in Geneva and will be addressing the University of Tasmania via video link, will call on the government to act on the “strong and growing support that exists in Australia for this crucial new piece of international law”.
According to prepared remarks provided to Guardian Australia in advance, she will describe the treaty as an “incredible step forward towards a world without nuclear weapons”.
Fihn will say the countries that have joined the treaty are “leading the way forward to a world without nuclear weapons”.
“Meanwhile, in countries that have not yet joined the treaty, including Australia, people are speaking up against nuclear weapons and calling on their countries to join,” she will say.
“Cities around the world, including Berlin, Paris and Washington DC are adopting resolutions calling on their governments to join. In fact, the very first city to sign our Cities Appeal was Melbourne, followed soon after by Sydney – and we’re delighted that the City of Hobart is also on board.”
Polling commissioned by Greenpeace in 2017 found 72.7% of 1,669 Australians surveyed said they supported a ban on nuclear weapons as a step towards the elimination of all nuclear weapons.
“From Australia to Canada, Germany, Japan and the United Kingdom, polls show that the majority of people want their government to join,” Fihn will say.
“Thousands of parliamentarians have pledged to work to bring their respective countries on board. In Australia, 88 of the current members of parliament have taken Ican’s pledge.”
The Ican pledge commits parliamentarians “to work for the signature and ratification of this landmark treaty by our respective countries”.
The federal MPs and senators who have signed up are mostly Labor politicians, including the opposition leader, Anthony Albanese, who has been campaigning against nuclear weapons since early in his political career.
The list also includes the Greens leader, Adam Bandt, and crossbenchers. The Liberal National party MP for Flynn in central Queensland, Ken O’Dowd, has also signed up.
In Thursday’s speech, Fihn will also emphasise the need to “amplify the voices of First Nations peoples in Australia and the Pacific who continue to suffer the horrendous impacts of nuclear tests carried out on their lands and in their waters by the United Kingdom, the United States and France”.
More than 75 years after the US bombing of the Japanese cities of Nagasaki and Hiroshima in 1945, she says, nuclear-armed states are spending billions of dollars each year to build new weapons and to keep the 13,000 existing weapons.
But Fihn says nuclear-armed states “do not prepare for what comes next, after the bombs are dropped”, citing reports that about 80% of hospitals were destroyed in Hiroshima. Out of 300 doctors in the city, 270 died or were injured; out of 1,780 nurses, 1,654 were killed or injured.
“They do not prepare for the hundreds of thousands of burn victims, for the blasted hospitals, for the injured and dying medical professionals left to heal an entire city,” Fihn says.
“The trauma of overwhelmed hospitals and overburdened doctors and nurses around the world who are struggling to meet the needs of patients during the Covid-19 pandemic shows just how impossible it would be for medical infrastructure to respond to even one nuclear weapon detonation.” The Australian government and other non-signatories are being encouraged to send officials to attend, as observers, the first meeting of parties in Vienna early next year.
Guardian Australia understands Australia will consider attendance closer to the event.