South Korea is proceeding with caution on the timing of its strategic oil stockpile release under the International Energy Agency (IEA) framework, as officials warn of a potential global oil supply crisis as early as August 2025. An industry ministry official confirmed the cautious stance on Tuesday, 26 May, signalling that Seoul views its reserve release as a last-resort instrument rather than an immediate response.

The IEA Commitment and Seoul's Hesitation

Earlier this year, South Korea pledged to release 22.46 million barrels of oil from its strategic reserves by 9 June, as part of a coordinated plan adopted by 32 IEA member nations. The joint release was designed to cushion global oil markets disrupted by the US-Israeli military conflict against Iran that erupted in late February.

However, Yang Ghi-wuk, Deputy Minister for Trade, Industry and Resources Security, told reporters at a regular press briefing that Seoul is deliberately holding back. He described the reserve release as a 'final' card to be deployed only in the worst-case scenario, not as a routine market management tool.

IEA's Red Zone Warning

IEA Executive Director Fatih Birol last week cautioned that commercial oil inventories are depleting at a 'very fast' pace, warning that oil markets could enter a 'red zone' in July or August. The concern centres on the prolonged effective closure of the Strait of Hormuz, a critical chokepoint for global crude shipments.

'Concerns over a possible oil crisis have somewhat eased recently with news that the situation in the Middle East may get better, but until just a few days ago, there have been projections that oil supplies may suffer disruptions if the effective closure of the Strait of Hormuz continues for longer,' Yang said.

Alternative Supplies Cushion the Blow

South Korea's industry ministry said the country's crude oil supplies are relatively stable for now, with approximately 85 percent of pre-Iran war supply volumes secured for use through July. The government has also activated a crude swap system with private firms to manage near-term demand.

Notably, the combined share of oil supplies sourced from regions outside the Middle East for the May–July period reached 51.5 percent, a sharp jump from 30.9 percent in the same period last year. Shipments from North and South America climbed to 35.6 percent from 23.1 percent, while supplies from Asia rose to 7.4 percent from 5 percent. Imports from Africa surged to 8.3 percent from just 2.2 percent.

Flexibility Within the IEA Framework

Deputy Minister Yang emphasised that South Korea's IEA commitment is not legally binding in terms of exact timing. 'We are trying to adhere to the IEA's plan as much as possible, but it is not an obligation or something we could get penalized for,' he said, adding that the timing and method of release can vary by member country.

This comes amid a broader recalibration by IEA member states on how aggressively to draw down strategic reserves, with the August supply outlook remaining a key variable. How the Strait of Hormuz situation evolves in the coming weeks will likely determine whether Seoul activates its reserves before or after the June deadline.