Canadian Prime Minister Justin Trudeau has thrown a free trade pact with Australia and nine other nations into limbo without warning.
Canada has blown a resurrected trade pact with Australia and nine other nations out of the water after snubbing a leader's meeting without warning and making a raft of last minute demands.
All 11 trade ministers from the Trans-Pacific Partnership countries including Canada agreed on Thursday night to a "substantial conclusion" to the deal, which appeared a dead certainty.
It was to be signed off by leaders on the sidelines of the Asia Pacific Economic Cooperation summit in Vietnam on Friday evening.
But Canadian Prime Minister Justin Trudeau raised a raft of last minute issues and stood up the 10 other leaders including Malcolm Turnbull, leaving the deal in limbo.
Australian Trade Minister Steven Ciobo, who was in Vietnam for the negotiations, is deeply disappointed.
"It's less than ideal to have every leader and trade minister from the other 10 countries sitting around the table and not having Canada there," he told reporters in Da Nang.
"That's not an ideal outcome."
Australia is not yet aware of the 11th hour issues Canada raised.
"We'll get to the bottom of all of that in due course," Mr Ciobo said.
Negotiations on the deal will continue, but the minister conceded the agreement would "absolutely" not be struck this weekend.
"There is of course still opportunity for us to continue discussions to try to work our way through the last remaining issues Canada raised," he said.
"But at this point in time it would appear, at the request of Canada, we've been unable to have leaders achieve a resolution today."
Australia, Japan and others who pushed hard to seal the deal are livid with Canada.
A source close to the negotiations said there were "a lot of very angry people, a lot of very pissed off leaders" at the meeting.
"The Canadians screwed everybody," they said.
It is not the first time the Trans-Pacific Partnership has been dealt a significant blow.
Donald Trump pulled the United States out of the agreement soon after becoming president, insisting he would only engage in country-to-country trade deals.
Mr Ciobo would not be drawn on whether Canada could be cut adrift and the trade pact could proceed with just other nine countries.
"I want to make sure we have as many parties as possible," he said.
"Obviously the value from the TPP comes from having it as broad based as possible - a comprehensive deal."
Australia will still walk away from the APEC summit with a free trade pact with Peru that will eliminate nearly all tariffs exporters face into the Latin American country.
The Peru agreement is a significant boost for Australia's sugar industry, farmers and mining services firms.
But Mr Turnbull had also hoped to seal the revived "TPP-11" deal in Vietnam as he urged other leaders to embrace free trade and turn their backs on protectionism.
The remaining 11 nations were leaving the door open to the US rejoining the deal, but Mr Trump slammed the door shut during his address to the APEC summit on Friday.
The US president said he was willing to strike trade deals with a raft of Pacific nations, but only on a country-to-country basis.
"I will make bilateral trade agreements with any Indo Pacific nation that wants to be our partner and that will abide by the principles of fair and reciprocal trade," Mr Trump said.
"What we will no longer do is enter into large agreements that tie our hands, surrender our sovereignty, and make meaningful enforcement practically impossible."
Mr Trump accused China and other "chronic trade abusers" of taking advantage of the United States.
The Trans-Pacific Partnership was expected to eliminate more than 98 per cent of tariffs in the free trade zone.
Australia would have new trade agreements with Canada and Mexico, and expanded access to markets in Japan, Chile, Singapore, Malaysia, Vietnam and Brunei.
Japanese tariffs on Australian beef would be reduced and cheese tariffs scrapped, with farmers granted new access to dairy products into Japan, Canada and Mexico.