Awarding the 2017 Nobel Peace Prize to ICAN , the International Campaign to Abolish Nuclear Weapons, surprised many, including Australians unaware of ICAN's work or humble origins in Melbourne in 2007. Critics also noted that Australia itself hasn't yet signed the test-ban treaty pushed by ICAN.
The Norwegian-based Nobel committee  chose ICAN “for its work to draw attention to the catastrophic humanitarian consequences of any use of nuclear weapons and for its ground-breaking efforts to achieve a treaty-based prohibition of such weapons.”
ICAN's win received a positive response in general on social media:
— Alex (@AlexEdneyBrowne) October 6, 2017 
New Zealand neighbors were happy to take some of the credit:
— Thomas Nash (@nashthomas) October 6, 2017 
The online Australian newspaper The New Daily  was quick to explain the role of ICAN's anti-nuclear campaign @nuclearban  in the adoption of the United Nations Treaty on the Prohibition of Nuclear Weapons in July this year:
— The New Daily (@TheNewDailyAu) October 8, 2017 
ICAN had campaigned tirelessly for a treaty, especially at the UN Open-Ended Working Group in Geneva after its formation in 2015.
However, some saw ICAN's win as tokenistic:
They threw alot of expensive parties, and people with no power to do anything signed some papers …. and not a single nuke was “abolished”
— Phoenix Wingman (@Phoenix_Wingman) October 6, 2017 
Although 122 nations voted for the treaty, none of the nuclear weapons states were among them. The Australian government will not sign the treaty despite pressure to do so. Paul Barratt, a former top Australian public servant, tweeted:
Aussie born group wins Nobel peace prize. Congratulations to Ican, big fail Australian Government. https://t.co/GrVtttBL0A 
— Paul Barratt (@phbarratt) October 6, 2017 
Australian activist John Englart echoed these sentiments:
— John Englart EAM (@takvera) October 8, 2017 
Australia delegates to the disarmament negotiations have been accused of being “weasels. ” Guardian Australia cartoonist First Dog on the Moon took up this idea after the Nobel Prize announcement:
They give Nobel prizes to weasels now? No they do not. BUT WHAT IF THEY DID? https://t.co/cOM5XOa9kr 
— F Onthemoon (@firstdogonmoon) October 9, 2017 
Some down under even called for a ‘reality check':
What have they done exactly? North Korea and soon Iran with Nukes, ICAN has failed surely! Can we get Obama's back when Iran starts testing?
— Strayan Drongo (@StrayanDrongo) October 6, 2017 
State Premier Daniel Andrews of Victoria, in which Melbourne is the capital city, took to Facebook  to promote ICAN's achievement:
An incredible thing happened to a Victorian-founded organisation on the weekend. It won the Nobel Peace Prize – and it hasn't got nearly enough the attention it deserves. Please fix that. Tag and share. Let everyone know what we're capable of in this daring, progressive little state at the bottom of the world.
But citizens like Cathy Micich rebuked : “So what role did Daniel Andrews play? Oh, that's right, jump on the bandwagon.”
Medact, a United Kingdom-based ICAN partner, reminds the world that ICAN has a long way to go in achieving its objective to ban all nuclear weapons:
— Medact (@Medact) October 6, 2017 
ICAN  concurs. Though it was founded in Melbourne, it shifted its global headquarters to Geneva, Switzerland since 2011 to be in close proximity to where the United Nations coordinates its disarmament talks.