WASHINGTON — Treasury Secretary Scott Bessent will roll out at 1 p.m. Monday the Iran sanctions package the Trump administration has spent five days billing as "an economic D-Day", a plan Bessent described in a Financial Times opinion piece as "the single greatest financial offensive ever" assembled against a foreign adversary.
The press conference is the point at which a week of ultimatums becomes written policy. President Trump on Aug. 20 threatened any country whose financial institutions, businesses or airports give Tehran "any type of lifeline"; Treasury on Aug. 21 reclassified Hezbollah as an Iranian proxy and sanctioned a 10-person cash-smuggling network; and Iran's Supreme National Security Council on Saturday warned that any nation joining the campaign will be treated as an enemy. Monday's rollout is expected to name the specific secondary-sanction targets and enforcement mechanisms Bessent has, until now, only described in general terms.
What Bessent has said
In the FT piece, Bessent said the objective was "to sever every economic lifeline that sustains the tyrannical regime until Tehran stands alone". He gave no detail on which instruments Treasury will use, saying he would lay them out at the 1 p.m. Eastern press conference. In a CNBC interview last week the secretary called the coming measures "the toughest sanctions in history" and framed them as "a one-two punch" alongside a naval blockade the U.S. has run on Iranian ports since the war began in February. Bessent said, "It is going to work in Iran, and we are going to collapse this regime."
Iran's response
Iranian Foreign Minister Abbas Araghchi called the coming measures "bound to fail" in an X post, writing "We have seen this movie before" and "Same bull. Different bullies." Iran's central-bank governor, Abdolnaser Hemmati, told domestic audiences the country would again absorb the pressure, saying earlier U.S. campaigns "imposed maximum pressure, imposed secondary sanctions, sanctioned all our banks...they sanctioned everything. The country stood and got through that period." The rial hit a record low of 2.02 million to the dollar as Tehran markets opened Monday, CBS News reported. Mohsen Rezaei, secretary of Iran's Supreme National Security Council, said Saturday, "Any country that takes part in imposing economic restrictions on us will be regarded as an enemy," and warned that "not even a drop of oil" would leave the Gulf if Iran's neighbors joined the U.S. effort.
The third-country lever
The extraterritorial reach is the piece Iran and outside governments have flagged as the sharpest break with earlier sanction rounds. Bessent told CNBC that Washington would tell foreign governments and firms, "You're either with us or against us." China's Foreign Ministry spokesman Lin Jian on Aug. 20 said, "Imposing sanctions and pressuring do not help to solve the issue," and urged parties to work through diplomacy. The United Arab Emirates last week imposed an indefinite trade embargo on Iran after accusing Iranian forces of firing two ballistic missiles at the country, an allegation Tehran denies. Iran's Foreign Ministry spokesman Esmaeil Baghaei called the U.S. threat against third states "an assertion of extraterritorial sovereignty".
The oil route
Iran, according to Reuters reporting cited by the BBC, said it will shut all oil exports from the region "if the war continues" and warned commercial shipping not to enter the Strait of Hormuz without Tehran's permission. One-fifth of the world's oil and gas usually passes through the strait, which has been effectively blocked since the war began in February. A ship was struck by an unknown projectile in the Red Sea off Saudi Arabia's coast, and Greece's military moved a Patriot missile-interceptor battery to Crete in response to Iranian threats against U.S. bases in Europe, CBS News reported. The U.S. also canceled a joint military exercise with South Korea planned for September, citing force constraints tied to the Iran war, the South Korean military said.
The unheard voices
Today's dossier draws on the BBC, CBS News and Al Jazeera; no lean-right U.S. outlet, congressional Republican critic of the plan, or Democratic dissenter was on the record against the package by press time. The substantive challenge to Bessent's premise came from Hemmati, who argued Iran had withstood earlier maximum-pressure campaigns intact, and from the administration's own record: the BBC noted that Trump in April threatened "a whole civilisation will die tonight" unless Tehran cut a deal, then climbed down after Pakistani mediation. The rial's continued fall suggests markets are pricing some of that history in.
Iran and Oman are set to continue talks Tuesday over management of shipping through the Strait of Hormuz, CBS News reported. Bessent's press conference is scheduled to begin at 1 p.m. Eastern.