Six months into a U.S.-led campaign of military pressure and economic blockade against Iran, the Islamic Republic remains defiant, continuing to assert its influence across the Middle East despite international efforts to curb its ambitions. Recent developments have underscored Tehran’s ongoing strategic posture, with disruptions reported at key maritime chokepoints critical to global energy supplies.
Iran’s actions have intensified tensions along both sides of the Arabian Peninsula. Tehran has maintained restrictions on commercial passage through the Strait of Hormuz, a crucial artery through which a significant portion of the world’s petroleum transits. Simultaneously, Houthi forces in Yemen have captured the port city of Mokha, advanced toward the Bab el-Mandeb Strait, and taken control of strategically located Red Sea islands. These moves effectively threaten multiple key maritime routes used for energy shipments.
Saudi Arabia, a central U.S. ally in the region, recently faced the shutdown of its east-west oil pipeline following attacks attributed to Iranian-backed militia operating out of Iraq. These developments collectively signify a growing challenge to Western influence and regional stability.
The ongoing situation presents what some experts describe as an erosion of credibility for the United States and its partners, as Iran appears capable of withstanding sanctions and military pressure while continuing to finance its Revolutionary Guards and allied proxy groups. This evolving dynamic has become a focal point in U.S. foreign policy discussions ahead of a planned summit on September 24 between former U.S. President Donald Trump and Chinese President Xi Jinping.
China plays a pivotal role in Iran’s economic resilience. It purchases approximately 90% of Iran’s oil exports, providing Tehran with substantial revenue that sustains its nuclear program and military activities. China’s consistent oil imports have mitigated the impact of the U.S.-led sanction regime, allowing Iran to maintain a semblance of economic normalcy despite a significant reduction in its oil stockpiles—from around 90 million barrels to an estimated 29 million barrels.
However, analysts point to emerging divergences between Chinese and Iranian interests. While Beijing has previously benefitted from its role as a primary buyer, persistent instability in the Persian Gulf threatens China’s broader energy security. Nearly 21 million barrels of petroleum passed daily through the Strait of Hormuz before the conflict escalated, with Asian markets reliant on uninterrupted flows from Saudi Arabia, the UAE, Iraq, and Qatar. The increasing risk to these supply routes, compounded by Houthi advances near Bab el-Mandeb, may prompt Beijing to reassess its support for Tehran.
In this context, calls have been made for the U.S. government to leverage economic and diplomatic tools to persuade China to reduce its oil purchases from Iran, demand reopening of the Strait of Hormuz under secure, non-discriminatory conditions, and curb military assistance or sanction evasion mechanisms supplied to Tehran.
Proposals include linking Chinese access to Venezuela’s oil reserves to tangible commitments on Iranian oil imports. The United States could conditionally permit expanded Chinese commercial activity in Venezuela’s energy sector—where China already holds significant investments and financing—in exchange for verifiable reductions in Iranian oil procurement. Such a strategy would aim to simultaneously restrict Iranian funding, provide Beijing with alternative energy sources, and support Venezuela’s production capacity.
However, officials caution that any cooperation with China on this front should not come at the expense of broader U.S. security interests, particularly regarding Taiwan or other regional issues where Washington remains firm on limiting Chinese influence.
As Iran projects strength across strategic maritime chokepoints and regional conflicts persist, the upcoming U.S.-China summit is poised to serve as a critical platform for addressing these intersecting challenges. The outcome may hinge on convincing China that continued support for Iran imposes greater risks than benefits, especially amid the diminishing Iranian oil reserves and the pressing need to stabilize vital global energy routes.