Iran is now using the Strait of Hormuz as its primary negotiating card in talks with the U.S. [1].

This shift in strategy moves the focus of diplomatic tension away from Tehran's nuclear program and toward the control of one of the world's most critical oil transit points. Because the narrow waterway links the Persian Gulf with the Gulf of Oman, any disruption threatens global energy stability, and international trade [2].

Nicholas Hopton, a former UK ambassador, said the Strait of Hormuz has overtaken Iran's nuclear programme as the key dispute [3]. This transition follows rising tensions between the U.S. and Iran, fueled by differing interpretations of a post-war memorandum of understanding [4].

While the nuclear issue has historically dominated the agenda, analysts suggest that the ability to restrict maritime traffic provides Tehran with more immediate and tangible pressure. However, the stability of this leverage is contested. The Council on Foreign Relations analysis team said the U.S.–Iran ceasefire is on the verge of collapse, which puts the strait’s traffic at risk [5].

Economic volatility has already mirrored these geopolitical shifts. Brent crude fell roughly $10 to around $89 a barrel after Iran reopened the strait [6]. Such fluctuations highlight how sensitive global markets remain to Iranian policy decisions regarding the waterway.

Despite the strategic maneuvering, Iran's Foreign Minister said the Strait of Hormuz is completely open for commercial shipping [7]. This statement comes amid warnings that billions of dollars in infrastructure damage are at stake if the strait remains closed [8].

Some reports suggest Iran's influence over the waterway may be easing, while others point to recent drone activity as evidence that the strategy carries significant risks [9]. For now, the strait remains the central point of friction in the bilateral relationship.

“The Strait of Hormuz has overtaken Iran's nuclear programme as the key dispute.”

The pivot from nuclear-centric diplomacy to maritime leverage indicates a shift toward 'gray-zone' tactics, where Iran uses its geography to create immediate economic pressure on the West. By weaponizing the Strait of Hormuz, Tehran can influence global oil prices and shipping security more rapidly than it can through nuclear escalation, though this strategy risks a direct military confrontation if the U.S. decides to forcibly ensure freedom of navigation.