MELBOURNE, Australia — The Canadian and Australian prime ministers on Thursday called for a de-escalation of the Iran war but added the Iranians must never gain a nuclear weapon. Canada's Mark Carney and his Australian counterpart Anthony Albanese discussed the war during their meeting in Australia’s capital, Canberra. The meeting came after news that a U.S. submarine sank an Iranian warship in the Indian Ocean and Turkey said NATO defenses intercepted a ballistic missile launched from Iran before it entered Turkey’s airspace. “We want to see a broader de-escalation of these hostilities with a broader group of countries than just the direct belligerents involved,” Carney said at a press conference with Albanese. “We stress that that cannot be achieved unless we’re in a position that Iran’s ability to acquire a nuclear weapon, develop a nuclear weapon, and to export terrorism, is ended. So that process must lead to those outcomes,” Carney added. He said the six-nation Gulf Cooperation Council, which were “showing tremendous restraint,” should become involved in the de