"If our tankers in the Caribbean or anywhere in the world face trouble caused by the Americans, they (the US) will also be in trouble."
Satellite images show Iranian ships.
A senior official in the Trump administration told Reuters on Thursday the United States was considering measures it could take in response to Iran’s shipment of fuel to crisis-stricken Venezuela.
Caracas regime leader Maduro recently surprised a group of mercenaries and Venezuelan dissidents, capturing two Americans in an ill-planned raid that has embarrassed Washington.
US officials said over the weekend they have a “high degree of certainty” that Maduro has been paying Iran in gold for the fuel.
The United States has a "high degree of certainty" that the government of Venezuelan President Nicolas Maduro is paying Iran with tons of gold, the official said, speaking on condition of anonymity.
A bizarre invasion of Venezuela that involved US Green Berets appeared to end in disaster this week.
"Donald Trump is the direct chief of this invasion," Maduro said in televised comments, after the video of Denman was broadcast.
The government of President Nicolas Maduro on Sunday said mercenaries had attempted to enter the country on speed boats from neighboring Colombia.
US indicted socialist Venezuelan president for narcotics operation with terrorists