By Gram Slattery and Ryan Patrick Jones

WASHINGTON (Reuters) -The U.S. Treasury Department announced fresh sanctions on Wednesday on over 115 Iran-linked individuals, entities and vessels, in a sign the Trump administration is doubling down on its "maximum pressure" campaign after bombing Tehran's key nuclear sites in June.

The sanctions broadly target the shipping interests of Mohammad Hossein Shamkhani, the son of Ali Shamkhani, who is himself an adviser to Supreme Leader Supreme Leader Ayatollah Ali........

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