The death of Ali Chamenei marks the end of a 36-year period during which he solidified Iran's position as a formidable adversary of the United States and Israel. Under his leadership, Iran’s military influence extended across the Middle East, particularly in Iraq, Syria, Lebanon, and Yemen. His rule was marked by a consistent hardline stance against the United States, often labeling it as the 'Great Satan' and upholding the ideological foundations established during the Islamic Revolution of 1979.

During his tenure, Chamenei played a pivotal role in shaping Iran's nuclear program, significantly influencing its development amidst international scrutiny and sanctions. His policies not only affected Iran's nuclear ambitions but also intensified the Israeli-Iranian conflict, as a series of major incidents unfolded over the years, illustrating an ongoing and escalating rivalry. Furthermore, Chamenei's leadership saw Iran bolstering its internal power structures while also expanding its regional influence, leading to new dynamics in alliances within the Middle East as his term drew to a close.

Chamenei’s passing raises questions about the future of Iran’s foreign policy and its relations with the USA and Israel, as well as the implications for regional alliances. With his departure, the continuity of his hardline policies and the trajectory of Iran's nuclear ambitions remain uncertain, leaving a significant impact on the geopolitical landscape of the Middle East.