Bessent will unveil Iran sanctions Monday while ruling out a return to large-scale combat

Treasury Secretary Scott Bessent will hold a news conference at the Treasury Department at 14:00 ET on Monday, 24 August — 18:00 GMT — to set out new Iran sanctions, according to an official Treasury statement carried on the Reuters wire. The press conference is confirmed; the contents of the package are not. Bessent trailed it on CNBC on Thursday, describing the sequencing as “a one-two punch” and the objective in terms no previous Treasury secretary has used on the record: “we are going to collapse this regime.” President Donald Trump announced the campaign on Truth Social on Wednesday 19 August, calling it the most crushing economic operation ever taken against any country and using the phrase “ECONOMIC D-DAY”. Beijing, responding in the same Reuters cycle, said sanctions will not help resolve the issue.

The weekend’s more consequential line came in a second CNBC appearance on Friday, when Bessent said the measures would negate the need for further military action and that the United States likely will not restart large-scale combat as it steps up economic pressure. Vice President JD Vance, quoted in the same piece, called economic pressure Washington’s “most effective tool” against Iran. The Washington Trade & Tariff Letter reads the remarks as the clearest signal yet that the package rests on secondary sanctions forcing foreign governments, banks and companies to choose between Iran and the US economy — though that item is paywalled beyond its lede and is one outlet’s characterisation, not a description of a document.

Tehran’s answer has been rhetorical rather than operational. Foreign Minister Abbas Araghchi wrote on X on 20 August that the announcement was “a diversion from America’s own crisis: unprecedented debt & surging interest costs.” President Masoud Pezeshkian, speaking publicly on Friday, argued the war should be ended now, while Iran holds “a position of power and dignity,” and defended the June memorandum of understanding against parliamentary critics who call it a capitulation: “They cannot find even a single clause in this agreement that indicates capitulation,” he said, describing the document as honourable and approved by the Supreme National Security Council. Al Jazeera’s 22 August report states that the memorandum expired days ago, and that Iran’s military leadership has since warned of “crushing, punishing and devastating responses” to new threats.

Assessment: Two things are being conflated and should not be. A press conference has been confirmed; a sanctions regime has not. Until Monday afternoon there is no text, and “the toughest sanctions in history” is a market and political line, not a legal instrument. The load-bearing fact is elsewhere: if the June memorandum has lapsed, as Al Jazeera reports, then Bessent’s assurance that Washington will not resume large-scale combat is being offered precisely as the arrangement restraining it disappears. Read that assurance as a signal to third-country banks — secondary sanctions only work if others comply, and China has already said publicly that they will not help.