Officials from Canada and its key allies including Australia, New Zealand and U.S. Wednesday walked out of a UN nuclear conference in Vienna in protest against Iran's accusation of Israel as a nation with historical records of genocide.

John Barrett, Canada's ambassador to the International Atomic Energy Agency Meeting was joined by envoys of the United States, New Zealand and Australia to protest their Iranian counterpart Ali Asghar Soltanieh's comment over the Israel's historical human rights record.

According to the Canadian Press, the Iranian representative went on criticizing Israel as a country with "a dark record of genocide."

Referring to the storming out of the meeting, a Canadian official who was a part of the delegation at the meeting said that the Iran's comment was extremely annoying.

"That's just a red line for us. We stood up and walked out," the Canadian official told Canadian Press on the condition of anonymity.

The delegations from the Australia, New Zealand, U.S. and Canada returned to the closed door International Atomic Energy Agency conference hours later.

Iran in the past has often shunned Israel for its policies towards the Palestinians.

Canadian Foreign Minister John Baird last week issued a statement condemning Pakistan's $7.5 billion Pipeline project to Iran.

The Canadian federal government foreign minister said that Canada was disappointed by Pakistan's decision to build the gas pipeline to Iran to purchase Iranian resources.

"At a time when the international community is united in using every lever possible to convince Iran to reverse its dangerous course, Pakistan's decision runs directly contrary to these objectives and should be revisited," said John Baird, saying Iran is a 'dangerous' nation and a 'threat' to the world peace.

Canada also said that Pakistan could have easily chosen any other country for the gas deal, saying Iran is not the only country having rich natural resources.

Canada and its allies at the meeting are said to be trying to preclude Iran in moving ahead with its nuclear ambitions.

The International Atomic Energy Agency meeting began March 4.

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