GENEVA (Reuters) - Iranian President Hassan Rouhani made an apparent threat on Tuesday to disrupt other countries' oil shipments through the Gulf if Washington presses ahead with efforts to halt Iranian oil exports.

"America should know that we are selling our oil and will continue to sell our oil and they are not able to stop our oil exports," Rouhani said in a televised speech during a trip to the northern Iranian city of Shahroud.

"If one day they want to prevent the export of Iran's oil, then no oil will be exported from the Persian Gulf," he said.

Rouhani made similar comments in July.

Also in July, an Iranian Revolutionary Guards commander, Ismail Kowsari, was quoted as saying that Tehran would block oil shipments through the Strait of Hormuz lf the United States banned Iranian oil sales.

Tensions have risen between Iran and the United States after U.S. President Donald Trump withdrew from a multilateral nuclear deal in May and reimposed sanctions on the Islamic Republic.

Rouhani said the United States would not succeed in cutting Iran's economic ties with the region and the world.

"The most hostile group in America, with relation to Iran, has taken power," Rouhani said, according to the state-run Islamic Republic News Agency (IRNA). "Of course they never had a friendship with the people of Iran and and we never trusted America or others 100 percent."

Iranian Vice President Eshaq Jahangiri also said on Tuesday that U.S. sanctions were hitting vulnerable people in Iran.

"When (Americans) say their target is the Iranian government and there won't be pressure on the sick, the elderly and the weak in society, it's a lie," Jahangiri said, according to IRNA.

(Reporting by Babak Dehghanpisheh; Editing by Kirsten Donovan, Edmund Blair and Adrian Croft)

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