An Iranian news agency close to the elite Revolutionary Guards said that there would be repercussions if the United States acts "just like pirates" against an Iranian fuel shipment to Venezuela.
A senior official in President Donald Trump's administration said on Thursday the United States was considering measures it could take in response to Iran's shipment of fuel to crisis-stricken Venezuela.
The oil sectors of Iran and Venezuela - members of OPEC that both are deeply at odds with the United States - are under tough U.S. sanctions. The Trump administration official declined to specify the measures being weighed but said options would be presented to Trump.