Washington is tracking the supply in an attempt to prevent more shipments of Iranian fuel to Venezuela. It has warned states, seaports, shippers and insurers that if they support the tankers they might face steps.

Iran practices its free trade rights with Venezuela and we are ready to send more ships if Caracas demands more supplies from Iran," Abbas Mousavi state.

Two Iranian tankers which delivered fuel to Venezuela as part of the flotilla have started sailing back, according to Refinitiv Eikon on Sunday, as the Caracas government is preparing stations to start charging for the gasoline.

After 2018, when President Donald Trump exited Iran's 2015 nuclear agreement with six major powers and re-imposed sanctions on the nation that ravaged its economy, tensions have spiked between longtime foes Tehran and Washington.

Maritime Business World