US sanctions against Iran will have "severe consequences" for the world order, Iranian Foreign Minister Mohammad Javad Zarif said on Tuesday, days before new sanctions on Tehran's oil exports take effect.

Washington reintroduced sanctions against Iran's currency trade, metals, and auto sectors in August after it pulled out from the multinational 2015 deal that lifted sanctions in return for limits on Iran's nuclear program.

A new set of sanctions on Iranian banking and energy sectors are to take effect from November 5, as US President Donald Trump seeks to cut oil purchases from the Islamic Republic to zero.

"Unfortunately a law-breaking country (the United States) seeks to punish a country (Iran) that is abiding by the law. This method will have severe consequences for the world order," Zarif was quoted as saying by the Iranian state news agency IRNA during a visit to Istanbul.

However, Zarif added, "Americans have not achieved their goals by imposing illegal sanctions against Iran."

Tehran says it has complied fully with the nuclear accord and its commitment has been repeatedly confirmed by the UN atomic watchdog, International Atomic Energy Agency (IAEA).

Trump complained that the deal, approved by his predecessor Barack Obama, does not cover Iran's ballistic missiles, its role in regional wars or what happens after the nuclear pact begins to expire in 2025.