The impact of the war in the Middle East could lead to structural demand destruction on the world’s natural gas markets, the head of the Gas Exporting Countries’ Forum warned in the latest sign of the far-reaching impacts of the hostilities between the United States and Israel, and Iran. The war has already disrupted international gas flows because of the Strait of Hormuz closure and the strikes on energy infrastructure in the Persian Gulf, which were Iran’s retaliation for U.S. and Israeli strikes that began at the end of February.…