President Trump has threatened severe economic consequences for countries and entities helping Iran, potentially putting China and its purchases of Iranian oil at the center of Washington’s latest pressure campaign.

The announcement extends a pressure campaign the Trump administration has waged since April under the banner Operation Economic Fury.

US president announces 'causing economic operation' against Iran, vows measures against nations trading with Tehran.

Donald Trump warned countries providing Iran any financial, business or government support that they could face ‘tremendous economic consequences’.