US public radio; framed the exchange as exposing the Strait of Hormuz reopening dispute as the immediate trigger, with both sides accusing the other of initiating the fresh round

NPR reported that efforts to reopen the Strait of Hormuz without Iran's direct oversight sparked the fresh exchanges, and that a US official said diplomatic talks would continue despite the strikes and Iran's threat to halt them.

“U.S. and Iran exchange strikes, underscoring the fragility of the ceasefire; Hormuz reopening dispute identified as trigger.”