US Treasury Secretary Steve Mnuchin has said he expects President Donald Trump to impose new sanctions on Iran.

The news comes as Mr Trump faces a Friday deadline to decide whether to waive other major sanctions on Iran lifted under the 2015 nuclear deal.

Earlier, European powers urged Mr Trump to uphold that agreement, saying it was vital for international security. 

Mr Trump has criticised the deal, which saw sanctions lifted when Iran agreed to limit its nuclear fuel production.

Mr Mnuchin told reporters he was expecting new sanctions on Iran to be announced - which previous reports have suggested could be targeted measures against Iranian individuals and businesses.

"We continue to look at them. We've rolled them out and I think you can expect there will be more sanctions coming."

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