150 paper doves bearing messages to Foreign Minister Julie Bishop have dotted the lawn overlooking the Opera House at Sydney’s Botanical Gardens.

The 150 doves, each representing 100 nuclear warheads, will be sent to the minister by Greenpeace Australia Pacific to remind her that Australians don’t support the government’s decision to stand by as the world takes meaningful action to eliminate nuclear weapons.

Overnight the UN Treaty on the Prohibition of Nuclear Weapons opened to signatures in New York. More than 120 nations signed on with Australia notably absent.