A 54-Kilometer Corridor, One-Fifth of Global Crude

On November 5, 2026, two tankers and an intervention tug caught fire in the Strait of Hormuz, according to Iran's Revolutionary Guards, one day after the announced destruction of four tankers following collisions with mines. This 54-kilometer-wide passage channels about 21 million barrels per day, more than one-fifth of global consumption. Since the start of the US-Israeli-Iranian conflict on February 28, 2026, every incident is first read in prices.

The Risk Is Already Being Priced

Brent stood at $92 in early November, up 18% since February 28, and reached $96.12 on November 5. Maritime transport costs to Asia have surged 40% since March. South Korea, the world's sixth-largest importer at 2.8 million barrels per day, is on the front line.

Three Buffers, None Sufficient

Seoul holds 100 days of strategic reserves. Its purchases from the US and Canada have risen 35% since March. But 60% of Asian imports still depend on the passage. A full closure would force rerouting around Africa via the Cape of Good Hope — three extra weeks and 60% higher logistics costs.

A Technical Response, Not a Military One

It is in this context that the Cheonghae anti-piracy mission expands from 320 to 395 personnel. It receives a P-8 Poseidon patrol aircraft, a demining team, naval surface drones and underwater robots. Operations remain confined to international waters south of Oman, 650 kilometers from the strait, with a ban on targeting or surveilling Iranian territory. No coordination with US forces is planned. President Lee Jae-myung reaffirmed in September the principle of non-involvement in the war.

The logic is that of insurance: mapping risk zones, flagging drifting mines, intervening on request for South Korean vessels. The deployment does not seek to reopen the strait.

The Limits of the Maneuver

The 650-kilometer distance means protection does not cover the passage itself. The extension remains subject to a parliamentary vote expected in the coming weeks, and Iran warned Seoul in September against any such deployment. Moreover, the available figures are not all consistent: $92 in early November versus $96.12 on November 5. The causes of the fires, which rest on Iranian statements, are not established. Finally, the regulatory watch on the file, composed of four truncated headlines, provides no usable element.

What Can Be Concluded

Seoul is buying time. It reduces its exposure to risk without being able to eliminate it, and refrains from any escalation. This strategy works as long as the strait remains partially navigable. In the face of a full closure, the 100 days of reserves would be the only rampart.

This article was written with the assistance of artificial intelligence and verified by our editorial team.