A dramatic geopolitical shift is underway in the Middle East. Saudi Arabia and Iran, once bitter regional rivals, are accelerating their diplomatic reset with high-level visits, joint talks, and growing cooperation on Palestine, Lebanon, Syria, and regional security. Saudi Deputy Foreign Minister Saud bin Mohammed Al-Sati arrived in Tehran for talks with Iranian FM Abbas Araghchi, marking one of the most significant diplomatic engagements since the two nations restored ties last year.