UAE seeks US dollar swap line as war drains reserves, threatens petrodollar system

Key facts

• UAE dollar reserves are being depleted by as much as $120 billion and counting.
• The Strait of Hormuz carries over 20% of the world's oil and gas traffic.
• US Treasury Secretary Scott Bessent revealed that 'many' Gulf and Asian allies want currency swap lines.
• The UAE announced it will leave OPEC and OPEC+ on May 1.
• The US extended a $20 billion swap arrangement to Argentina in 2024.
• A currency swap line allows a central bank to exchange its own currency for US dollars temporarily.

A lifeline in dollars

The United Arab Emirates has asked Washington for a currency swap line worth billions of dollars, a request that would have been unthinkable before the war with Iran disrupted the global oil trade. The Gulf state’s dollar reserves are being depleted fast — by as much as $120 billion and counting — because it cannot export oil and gas at pre-war levels through the Strait of Hormuz, a chokepoint that carries more than a fifth of the world’s hydrocarbon traffic. Without a swap arrangement, the UAE has warned the Trump administration, it may be left with little choice but to shift trade into the Chinese yuan, a currency the US is actively trying to contain. The message is blunt: the dollar’s dominance in global energy markets is at stake.

What a currency swap line is — and is not

A currency swap line is an agreement between two central banks that allows one to access US dollars in exchange for its own currency at a pre-agreed rate, with the transaction reversed later. It is not aid or a permanent transfer; it is liquidity on demand. In a crisis, the problem is often not wealth but access — a country may have long-term assets but cannot quickly obtain dollars to meet immediate needs, and panic can spread. In 2024, the US extended a $20 billion swap arrangement to Argentina, helping stabilise the peso and restore market confidence. The principle is to provide temporary dollar access, calm the system, and withdraw support once stability returns. Wealthy Gulf nations, including the UAE, are now asking for a similar facility amid the war in West Asia.

The dollar question behind the war

The war with Iran is no longer just a story of missiles and military strategy; it is turning into a global scramble for US dollars. The conflict has disrupted the Strait of Hormuz, threatening the financial systems of Gulf economies that are deeply tied to oil income priced in dollars. The system that took shape in the 1970s made US treasuries and the dollar the most attractive destinations for surplus capital, but when oil income is choked, everything else begins to strain: government spending, banking liquidity, and currency stability. US Treasury Secretary Scott Bessent has revealed that “many” American allies in the Gulf and Asia want what are known as currency swap lines. The UAE has reportedly told Washington that it was the US that started a war the UAE did not want, and that dollar reserves are being depleted fast because exports cannot flow at pre-war levels.

A double hedge: leaving OPEC while seeking dollar access

On Tuesday, the UAE dropped a bombshell, announcing it will walk out of OPEC and OPEC+ on May 1. The move comes against the backdrop of the Iran war, which has shaken global energy markets, and amid ongoing talks with the US over currency swap lines. It clearly means national survival now outweighs continuing to be part of the oil cartel. With energy prices already high, Abu Dhabi wants maximum flexibility to pump more if routes reopen, reroute flows, or deploy supply in line with its own security and economic interests rather than collective quotas. Its engagement with Washington on currency swaps points to a deeper shift, aligning more closely with the US financial and security umbrella as regional risks intensify. In effect, the UAE is hedging on two fronts: breaking free from OPEC+ constraints in oil while securing dollar liquidity in finance. Saudi Arabia will be watching with unease.

America’s own interest in preserving dollar dominance

This is not just the Gulf’s problem; it is very much America’s as well. If the US wants to preserve the dominance of the dollar, it has a clear interest in stepping in to support its Gulf allies. The Trump administration has been mulling the request, signalling willingness but stopping short of commitment, keeping the door open while making it clear that access to dollar lifelines is a privilege, not a right. For Gulf economies, the disruption is existential. Their financial systems are built on dollar access and global flows, and war with Iran exposes the limits of that model. The UAE’s request is a stark reminder that even wealthy nations can find themselves knocking on America’s door in times of crisis.

What comes next

The outcome of the swap-line talks will signal whether the US is willing to back its Gulf allies with more than words. A positive response could reinforce the petrodollar system and deepen the UAE’s alignment with Washington. A refusal, or prolonged delay, could accelerate a shift toward alternative currencies, particularly the yuan, and weaken the dollar’s grip on global energy trade. In a war-torn market, agility and alliances matter more than bloc loyalty. The UAE is already demonstrating that by leaving OPEC. The dollar question may prove equally consequential for the future of the international financial order.

The bottom line

• The UAE has requested a US dollar swap line worth billions as its reserves are depleted by the Iran war.
• Without dollar access, the UAE warns it may shift trade to the Chinese yuan, threatening petrodollar dominance.
• The UAE will leave OPEC and OPEC+ on May 1, seeking production flexibility amid the crisis.
• US Treasury Secretary Scott Bessent confirmed that many Gulf and Asian allies want swap lines.
• The US extended a $20 billion swap to Argentina in 2024, setting a precedent for emergency dollar liquidity.
• The Strait of Hormuz carries over 20% of global oil and gas traffic; its disruption is existential for Gulf economies.