Trump Claims He Will Unveil the Harshest Economic Action Ever Taken Against a Country, Aimed at Iran

US President Donald Trump said on Wednesday local time (Thursday, 29 Mordad 1405, August 20, 2026) in a post on Truth Social that he would announce today the most crushing economic action ever taken against any country, targeting Iran, describing it as an economic war and isolation on an unprecedented scale.

According to IRNA, carried by Ecoiran, and separately Al Jazeera, carried by Donya e Eqtesad, Trump warned that any country that lets its financial institutions, companies or airports provide any lifeline to Iran would face severe economic consequences, and called for an immediate halt to oil smuggling, barter deals, cash transfers, exchange house activity, ship registrations and shell companies linked to Iran. Specific details of the new action, such as named institutions or an exact timeline, had not been announced as of this report.