The memorandum of understanding (MoU) between Tehran and Washington “has entered a stage of crisis,” Iran said on July 13, as the United States struck Iran for a second day running, drawing Tehran’s reprisals against U.S. allies in the Gulf.

Iran said Sunday it was closing the Strait of Hormuz and launched missiles and drones at Gulf neighbours after the US carried out a new round of strikes as their conflict…

The sustained escalation in fighting comes nearly a month after the two sides inked a draft peace deal that prolonged a ceasefire and began 60 days of negotiations.