MUSCAT Oman said Thursday it will host a sixth round of nuclear talks between the United States and Iran over the weekend amid escalating tensions between the long-time foes. "I am pleased to confirm the 6th round of Iran U.S. talks will be held in Muscat this Sunday," Foreign Minister Badr Albusaidi said in a post on X. Tehran and Washington have held five rounds of talks since April to thrash out a new nuclear deal to replace the 2015 accord that Trump abandoned during his first term in 2018.