Reuters - Iranian President Hassan Rouhani warned on Saturday of retaliatory measures against the United States if Washington caused problems for tankers carrying Iranian fuel to Venezuela, the semi-official news agency Mehr reported.

�If our tankers in the Caribbean or anywhere in the world face trouble caused by the Americans, they (the U.S.) will also be in trouble,� Rouhani said in a phone conversation with Qatar�s Emir, Mehr reported.

A flotilla of five tankers carrying Iranian fuel for gasoline-starved Venezuela is approaching the Caribbean, with the first expected to reach the country�s waters on Sunday, according to Refinitiv Eikon tracking data.

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Reporting by Dubai newsroom; editing by John Stonestreet