The top US commander in the Middle East, Admiral Brad Cooper, advised President Donald Trump that striking Iranian targets around the Strait of Hormuz was no longer effective, Axios reported on Sunday, citing two people familiar with the matter.

Cooper, who leads US Central Command (CENTCOM), reportedly told Trump that the designated bombing targets in the area had largely been exhausted. He added that there was no point in continuing the strikes unless the US returned to major combat operations, according to Axios.

Trump paused the strikes on Friday, abruptly ending a 13-day bombing campaign amid reports that regional mediators were rushing to broker a new ceasefire. Several US news outlets reported that Trump was also concerned about dwindling stocks of interceptors used to counter Iran’s retaliatory missile and drone attacks on American bases across the Middle East. Trump, however, denied that the US was running short of ammunition.

The Strait of Hormuz, a vital maritime chokepoint, remains closed to regular commercial shipping despite US strikes on Iran’s port infrastructure and military sites in the country’s south. The US resumed its maritime blockade of Iran earlier this month following attacks on tankers attempting to transit the strait.

Both sides have signaled that the truce, first reached in April and later expanded through a memorandum of understanding (MoU) signed on June 17, is effectively over.

The latest round of hostilities erupted over differing interpretations of the MoU, which was intended to provide more time for negotiations over Iran’s nuclear program. Tehran insists it has the right to control all traffic through the Strait of Hormuz and has labeled routes designated by the US Navy as illegal.