TEHRAN — Iran has escalated its rhetoric against Washington amid the US naval blockade and the seizure of its oil tankers in the Indian Ocean, accusing the United States of "legalizing piracy" and warning of consequences for maritime security. 

But behind the diplomatic outrage, a more complex picture is emerging about a state trying to reassure its domestic audience while navigating mounting pressure on the very trade routes that sustain its economic lifelines.

Foreign Ministry spokesperson Esmail Baghaei framed the US actions as "the outright legalization of piracy and armed robbery," adding in a sharply worded post on Monday that the world was witnessing "the return of the pirates — only now, they operate with government-issued warrants, sail under official flags, and call their plunder 'law enforcement.'" The comments came after US officials announced the interdiction of two vessels allegedly carrying around 1.9 million barrels of Iranian crude each.

Yet even as Tehran escalates its diplomatic offensive, it is simultaneously trying to project calm at home. The underlying message from officials and state-aligned media is that while the pressure from President Donald Trump is real, it is neither decisive nor sustainable.