Oman says excluding Iran from Gulf security has been a fundamental mistake:

Omani Foreign Minister Badr Albusaidi criticized decades of Gulf security arrangements built around excluding Iran and relying on foreign military powers, calling for a new regional security framework that includes Tehran.

“Perhaps the most damaging of the priorities imposed on the region from the outside has been the requirement that Iran be excluded,” he said during a lecture at Cambridge University.

This, he said, created an unstable system based on the “entirely false perception” of fundamental antagonism between Iran and Arab Gulf states. “There is no such fundamental antagonism,” he said, adding that any security architecture excluding Iran is “inherently unstable” and “structurally unsound.”

He also said that Oman and Iran had developed the outline of a temporary arrangement to restore navigation through the Strait of Hormuz, but said implementation would require compromises by both Tehran and Washington.