Oil Supply Routes Face Cascading Disruptions Across Key Chokes

The Houthis have seized control of the Yemeni coast and Perim Island in the Bab el-Mandeb Strait. This move allows the group to monitor one of the world’s most critical shipping lanes. The Strait of Hormuz is already experiencing severe disruption. Saudi Arabia responded by shifting crude exports to the Red Sea via its East-West pipeline. That pipeline was subsequently attacked, creating a new bottleneck in the supply chain. Each alternative route adds distance, cost, and infrastructure risk to the global energy network.

Energy markets treat each disruption as an isolated incident. The Russian invasion of Ukraine and the subsequent gas weaponization were viewed as exceptional events. The closure of Hormuz and Houthi attacks in the Red Sea followed the same pattern. Damage to pipelines and LNG facilities further compounded the instability. Europe replaced Russian gas with US imports, but this did not create energy autonomy. Under the 2025 framework, the EU pledged to facilitate $750 billion in US energy purchases over three years. This dependency grants suppliers significant leverage over European policy decisions.

Historical Patterns of Supply Disruption

Warnings about oil insecurity have persisted for fifty years. The 1973 Arab oil embargo tripled prices and exposed Western reliance on Middle Eastern crude. The 1979 Iranian Revolution triggered another shock. The Iran-Iraq War and the 1990 invasion of Kuwait removed production from the market. Political breakdowns in Libya and Venezuela later interrupted supply. In 2019, attacks on Abqaiq facilities temporarily removed 5% of global oil supply. The Nord Stream explosions demonstrated that subsea pipelines are vulnerable to sabotage.

The mechanism of disruption remains consistent despite changing scales. In 2024, roughly 20 million barrels per day passed through the Strait of Hormuz. This volume represents about one-fifth of global petroleum consumption. Bab el-Mandeb carried approximately 8.7 million barrels per day in 2023. Rerouting tankers adds weeks of sailing time and consumes more fuel. Insurance and freight costs rise accordingly. Consumers see these costs in pump prices and heating bills. Strategically, this system transfers power to producers and transit states.

Logistical Costs of Alternative Shipping Routes

The temporary shutdown of the Saudi pipeline illustrates the fragility of fossil fuel logistics. When Hormuz becomes dangerous, oil is moved across the desert to Red Sea terminals. When Bab el-Mandeb is threatened, tankers consider the Cape of Good Hope. This route bypasses the Suez Canal but adds significant sailing time. Each alternative reduces one risk while adding distance and cost. It also creates new infrastructure that must be defended. The problem is no longer a single strait or militia. It is an energy system requiring combustible material to cross unstable borders and narrow waterways daily.