The sanctions clock started ticking in May when U.S. President Donald Trump pulled out of the multilateral agreement that eased sanctions pressure on the third-largest producer in the Organization of Petroleum Exporting Countries in exchange for commitments to scale back its nuclear ambitions.
The battle between the Trump administration and the clerical regime in Tehran pits the irresistible force against the immovable object.
Secretary of State Mike Pompeo attends a news conference on the sidelines of the 51st ASEAN Foreign Ministers Meeting in Singapore, on Saturday. Licenses that allow Tehran to buy USA and European aircraft also are revoked. Iran acquired five new European commercial planes on Sunday before the sales were cut off.
Remaining sanctions - including on Iran's oil and gas sector and central bank - will resume on Nov 5. Exporters would be allowed to sell hard currency to importers, and there would be no limit on bringing currency or gold into the country.
United Nations inspectors said Iran was complying with the deal, but Trump argued that it didn't do enough to curb Iran's malign activity in the region.
He alluded to Trump's suggestion last week of the potential for future negotiations with Tehran, a notion that senior Iranian officials quickly rejected. "We have no problems, so why should our people worry?", Hemmati said in a live televised interview.
"At 9pm [15:30 GMT on Friday] they attacked the school and tried to break the doors down and burn things", the Fars News Agency quoted the head of the school in the town of Ishtehad, Hojatoleslam Hindiani, as saying.
The officials who spoke to Reuters said the campaign, consisting of speeches and online material paints Iranian leaders in a harsh light, at times using information that is exaggerated or contradicts other official pronouncements, including comments by previous administrations.
Pompeo laid out the strategy behind the sanctions in his first major address as secretary of state.
Mr Pompeo said it would require "enormous change" by Iran to get out from under renewed US sanctions.
"Iran will be forced to make a choice: either fight to keep its economy off life support at home or keep squandering precious wealth on fights overseas".
President TrumpDonald John TrumpPastor at Trump rally prays to shield Trump from "jungle journalism" Bill Russell: Being criticized by Trump is the "biggest compliment you can get" Salmon farmers in California fear Trump will destroy their industry MORE pulled the US out of the Obama-era nuclear deal, which offered sanctions relief in exchange for Tehran reining in its nuclear program.