Iran has dismissed new Western sanctions imposed against it because of growing concerns about its nuclear programme.
A senior Iranian official said the sanctions would unite the Iranian people, would have no impact and would be "in vain".
On Monday, the US, UK and Canada announced new measures targeting Iran.
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An Iranian Foreign Ministry spokesman, Ramin Mehmanparast, told a news conference in Tehran that the West's attempts to isolate Iran's economy would only serve to unite Iranians behind their government's nuclear programme.
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http://www.bbc.co.uk/news/world-middle-east-15842261