“Blockading Iranian ports is an act of war and thus a violation of the ceasefire,” Araqchi said in a post on X, warning that such actions undermine efforts to de-escalate tensions.

He further alleged that a commercial vessel had been struck and its crew taken hostage, calling it “an even greater violation” of the truce.

Araqchi said Iran is capable of countering external pressure and safeguarding its national interests.

“Iran knows how to neutralise restrictions, how to defend its interests, and how to resist bullying,” he said.

The remarks come amid heightened tensions between Washington and Tehran, as both sides navigate a fragile ceasefire and uncertain prospects for renewed negotiations.