July 31 (UPI) -- The United States on Wednesday sanctioned dozens of individuals, entities and vessels accused of being an Iranian oil and petroleum shipping network, as the Trump administration continues with its so-called maximum pressure campaign targeting Tehran.

The 50 people and entities and 50 vessels blacklisted by the U.S. Treasury, along with 20 entities and 10 vessels sanctioned by the State Department on Wednesday, represent the largest punitive package against Iran since 2018, when President Donald Trump first imposed mass sanctions against Iran during his first term.

In 2018, Trump pulled the United States from a landmark multinational Obama-era accord aimed at preventing Tehran from securing a nuclear weapon, and slapped sanctions on the country as part of his maximum pressure campaign that failed to bring Iran to the negotiating table on a new deal.

Instead, Iran escalated its nuclear program to the point that the State Department remarked in 2022 that it would need as little as a week to produce enough weapons-grade highly enriched uranium for a nuclear weapon.

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