WASHINGTON, Aug. 21 -- U.S. President Donald Trump announced on Truth Social Wednesday that the U.S. will launch "unprecedented" economic warfare against Iran, following months without a military outcome or diplomatic progress.

Trump termed the campaign "an Economic D-Day," warning that any nation offering Iran a "lifeline" will face crushing consequences as he urged allies to "isolate, and defeat" the threat.

On Thursday, Treasury Secretary Scott Bessent told media the strategy is a "one-two punch" combining blockades with historic sanctions, noting maximum pressure makes a "kinetic restart" unlikely; he will share details Monday.

Iranian Foreign Minister Seyed Abbas Araghchi dismissed the plan on X as a failed policy and "economic te...