A senior administration official said "power in Iran is not held by elected officials," but rather by the supreme leader and his inner circle who are "forcibly suppressing all opposition in the country."
Among the individuals designated for sanctions are Ebrahim Raisi, the head of Iran's judiciary, and Ali Akbar Velayati a former foreign minister accused of being behind the lethal 1994 attack on an Argentinian Jewish centre which left 85 people dead.
The move is the latest attempt by the US to increase pressure on Tehran, as it tries to force the Iranian government to change its foreign policy in the Middle East.
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