MUSCAT A sixth round of nuclear talks between Tehran and Washington planned for this weekend has been cancelled, mediator Oman said Saturday, following waves of Israeli attacks on Iran . "The Iran U.S.-talks scheduled to be held in Muscat this Sunday will not now take place," Omani Foreign Minister Badr Albusaidi said in a post on X, adding that "diplomacy and dialogue remain the only pathway to lasting peace". It is "unjustifiable" to continue indirect talks between Tehran and Washington while