Iran’s foreign minister said Sunday that the European Union (EU) isn’t doing enough to make the nuclear deal worthwhile to Tehran following the U.S.'s withdrawal.

Reuters reported Sunday that Mohammad Javad Zarif told the EU’s energy commissioner that the European governing body needs to do more to preserve its oil trade in Iran.

“With the withdrawal of America … the European political support for the accord is not sufficient,” Zarif said, according to the news service.

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Iran reportedly expressed concerns that European companies would not be fully honoring the terms of the nuclear agreement if they are no longer able to do business in the country out of fear of U.S. sanctions.

“The contradictions in the words of European authorities are suspicious. We hope that our government officials will be able to secure the necessary guarantees in their negotiations, as one cannot rely on those who vacillate and speak contradictory words,” Ali Akbar Velayati, an adviser to Supreme Leader Ayatollah Ali Khamenei said, according to Reuters.

President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE announced earlier this month that he'd decided to pull the U.S. out of the Iran nuclear deal, despite pleas from European allies to remain in the Obama-era agreement.

The 2015 deal offered Tehran sanctions relief in exchange for curbing its nuclear program. The White House has said the U.S. will put those sanctions back into place.

European leaders have said they will continue to honor the agreement.

The reimposition of U.S. sanctions, however, puts European companies in a difficult position. If they continue to do business in Iran, they could face penalties from the United States.

Last week, national security adviser John Bolton was asked if the U.S. would consider imposing sanctions on European nations that continue to honor the deal.

"It's possible," Bolton said. "It depends on the conduct of other governments."