The United Arab Emirates said Tuesday it is leaving OPEC after more than half a century, delivering a significant blow to the powerful oil-producing alliance. The country, the group's third-largest producer, had previously chafed at production quotas imposed under OPEC's market-management strategy. The departure came as a surprise to observers.

The UAE's energy ministry framed the exit as a reflection of its long-term strategic and economic vision, citing rising medium- to long-term energy demand. It emphasized accelerated investment in domestic production and reiterated a commitment to market stability despite the split. The move underscores growing tensions between the cartel's largest members and its more ambitious producers.

Before the Iran war forced Persian Gulf states to cut back, the UAE was pumping roughly 3 million barrels per day. It has a reported output capacity of around 4.8 million barrels per day, with plans to expand further. That spare capacity gives it significant leverage to pursue independent production goals outside OPEC's quota system.

Without the UAE, OPEC faces a structurally weaker position, making it harder to coordinate output cuts or hikes to influence global prices. Other members with expansion ambitions may now reconsider their own commitments. Markets are likely to react as traders assess whether the departure leads to increased supply or further fractures within the alliance.

The exit may embolden other producers to seek greater autonomy. One analyst noted that the cartel's ability to act as a cohesive market manager is now in serious doubt.