Iran’s ambassador to Venezuela said Wednesday that the two nations, both under increasing U.S. pressure, are exercising their right to trade freely in a deal that includes shipping the South American nation five tankers of gasoline to relieve deep shortages.

Ambassador Hojjatollah Soltani said international conventions protect the expanding relationship between the two U.S.-sanctioned nations.

“This relationship between Iran and Venezuela doesn’t threaten anybody. It’s not a danger to anyone," Soltani said in a meeting with reporters at the Iranian embassy in Caracas.

Iran's ambassador to Venezuela Hojjatollah Soltani speaks during an event in support of the Palestinian people, at the Iranian embassy in Caracas, Venezuela, Wednesday, May 20, 2020. Soltani said Wednesday that the two nations under increasing U.S. pressure, Iran and Venezuela, are exercising their right to free trade in a deal that includes shipping the Caribbean nation five takers of gasoline to relieve a deep shortage. (AP PhotoAriana Cubillos)

Iran's ambassador to Venezuela Hojjatollah Soltani speaks during an event in support of the Palestinian people, at the Iranian embassy in Caracas, Venezuela, Wednesday, May 20, 2020. Soltani said Wednesday that the two nations under increasing U.S. pressure, Iran and Venezuela, are exercising their right to free trade in a deal that includes shipping the Caribbean nation five takers of gasoline to relieve a deep shortage. (AP PhotoAriana Cubillos)

The five Iranian tankers now on the high seas are expected to start arriving to Venezuela in the coming days. They're carrying gasoline to help alleviate days-long lines at service stations even in Caracas, which had normally been immune to shortages as the capital and seat of political power.

While Venezuela sits atop the world’s largest oil reserves, its oil production has plummeted in the last two decades, which critics blame on corruption and mismanagement under socialist rule. Recent U.S. sanctions designed to force Maduro from power have also impacted Venezuela's production.

Trump's National Security Council tweeted Monday that few financial lifelines remain for Maduro. The U.S. is among nearly 60 nations that recognize opposition leader Juan Guaidó as Venezuela's legitimate leader.

A view of the vessel the Clavel, right, sailing on international waters crossing the Gibraltar stretch on Wednesday, May 20, 2020. Five Iranian tankers likely carrying at least $45.5 million worth of gasoline and similar products are now sailing to Venezuela, part of a wider deal between the two U.S.-sanctioned nations amid heightened tensions between Tehran and Washington. (AP PhotoMarcos Moreno)

A view of the vessel the Clavel, right, sailing on international waters crossing the Gibraltar stretch on Wednesday, May 20, 2020. Five Iranian tankers likely carrying at least $45.5 million worth of gasoline and similar products are now sailing to Venezuela, part of a wider deal between the two U.S.-sanctioned nations amid heightened tensions between Tehran and Washington. (AP PhotoMarcos Moreno)

“Our maximum pressure campaign, which includes financial & economic sanctions, will continue until Maduro’s tyrannical hold ends,” the National Security Council said. “The humanitarian & economic crisis endured by Venezuelans is the fault of 1 person – Maduro.”

In addition to sending the fuel-laden tankers, Iran has flown in shipments of a chemical needed to restart an aging gasoline refinery. For Iran, the business ties represent a way to bring money into its cash-starved nation and apply its own pressure on Washington.

Ambassador Soltani denied claims that Iranian planes returned from Venezuela loaded with gold to pay for Iran's support. He accused Trump's Secretary of State Mike Pompeo of spreading “fake news” to undermine the deal, which the ambassador called a “win-win” for both Venezuela and Iran.

A view of the vessel the Clavel sailing on international waters crossing the Gibraltar stretch on Wednesday, May 20, 2020. Five Iranian tankers likely carrying at least $45.5 million worth of gasoline and similar products are now sailing to Venezuela, part of a wider deal between the two U.S.-sanctioned nations amid heightened tensions between Tehran and Washington. (AP PhotoMarcos Moreno)

A view of the vessel the Clavel sailing on international waters crossing the Gibraltar stretch on Wednesday, May 20, 2020. Five Iranian tankers likely carrying at least $45.5 million worth of gasoline and similar products are now sailing to Venezuela, part of a wider deal between the two U.S.-sanctioned nations amid heightened tensions between Tehran and Washington. (AP PhotoMarcos Moreno)

“They can sanction whoever they want,” Soltani said. “Iran will always advance.”

Follow Scott Smith on Twitter: @ScottSmithAP