The Suez–Bab-el-Mandeb corridor — why Houthi attacks rerouted world trade
Roughly 12% of seaborne trade moves through the Red Sea. Houthi missile attacks beginning in late 2023 cut that volume by more than half within weeks, forcing Asia-Europe shipping around the Cape of Good Hope and adding 10–14 days to delivery times.
Key fact
Suez Canal transits fell ~60% between Nov 2023 and Feb 2024 (PortWatch data)
The Bab-el-Mandeb is a 20-mile-wide strait between Yemen and Djibouti. Through it passes most of the seaborne trade between Asia and Europe — containerized manufactures, crude oil, refined products, LNG. North of the strait the Red Sea funnels into the Suez Canal; south of it lies the Indian Ocean.
Houthi forces in northern Yemen, backed materially by Iran, began attacking shipping in November 2023 in declared solidarity with Hamas. Within weeks Maersk, MSC, and Hapag-Lloyd had rerouted around southern Africa. Suez Canal revenues collapsed (~$10B annual hit to Egypt). Container rates from Asia to northern Europe doubled.
The strategic lesson is uncomfortable: a non-state group equipped with anti-ship cruise and ballistic missiles, plus loitering drones, can credibly close a maritime chokepoint. US-led Operation Prosperity Guardian degraded Houthi capabilities but did not restore traffic to pre-attack levels.
Insurance markets revealed the equilibrium first. War-risk premiums for Red Sea transits stayed elevated even when intercepts succeeded. Shipping companies will absorb a longer route over an uncertain one. Until the strategic situation stabilizes — meaning either a ceasefire or a different Yemen — Cape routing is the new baseline.
The corridor in question moves roughly 12% of global seaborne trade in normal conditions, including about 30% of global container traffic and the entire transit volume of liquefied natural gas moving from Qatar to European regasification terminals. The 1869 opening of the Suez Canal and the subsequent build-out of the Bab-el-Mandeb passage between Yemen and Djibouti created the shortest sea route between Europe and Asia; the alternative — rounding the Cape of Good Hope — adds roughly two weeks of transit time and 30% to per-voyage fuel cost on the Asia-Europe leg.
The Houthi attack campaign that began in November 2023 in response to the Israel-Hamas war in Gaza did not need to sink ships to produce a re-routing. The credible threat of attack, combined with the inability of war-risk insurance markets to price the risk at the previous premium level, produced the operational decision. By December 2023 Maersk and Hapag-Lloyd had paused Red Sea transits; by the first quarter of 2024, container-line passage volumes through the Suez Canal had fallen by approximately two-thirds. Suez Canal Authority transit fee revenue, which generates roughly $10 billion in annual hard-currency receipts for the Egyptian treasury, fell by approximately 60% year-on-year in 2024 — the single largest hit to Egyptian external balance in a decade.
Lars Jensen at Vespucci Maritime, the most consistent independent container-trade analyst, has tracked the operational adaptation in detail. The Asia-Europe route via the Cape adds 10-14 days to transit time, which forces the shipping lines to deploy approximately 10-15% more vessel capacity to maintain the same service frequency. The supply absorption was possible because the post-2021 newbuild orderbook was running near record levels — container freight rates had collapsed from the pandemic peaks, and the surplus capacity that had been depressing rates was redeployed onto the longer route. The net effect was a rate spike on the Asia-Europe corridor, partial pass-through to spot rates on adjacent trades, and a roughly 18-month containment of the disruption to one specific lane.
The Houthi campaign's operational evolution is worth noting. The early attacks used shore-launched anti-ship missiles and one-way attack drones; later phases incorporated unmanned surface vessels carrying explosive payloads and what appear to be Iranian-supplied uncrewed underwater systems. The US-led Operation Prosperity Guardian, a multinational naval task force operating under Combined Maritime Forces Task Force 153, has interdicted a substantial fraction of inbound projectiles but has not deterred the attack campaign. The political question — whether degrading Houthi launch capability requires sustained ground action or only sustained interdiction — remains unresolved across multiple US administrations.
The longer-run effect on Egyptian fiscal and political stability is what Timothy Kaldas at the Tahrir Institute has emphasised. Suez revenue had been a stabiliser in Egypt's external accounts; its near-disappearance over 2024 forced the country deeper into IMF program dependence, with the 2024 Extended Fund Facility adjusted upward and accompanied by GCC support. The Suez revenue stream's recovery curve depends not on Egypt's own choices but on whether the maritime security environment in the Bab-el-Mandeb stabilises — a determination Cairo has limited control over, and that links Egypt's macroeconomic trajectory to the trajectory of the Israel-Gaza-Yemen security file in ways that were not obvious before late 2023.
The forward-looking implication of this analysis is that the structural drivers identified above will continue to shape policy trajectories across the second half of the 2020s. The doctrinal frameworks, institutional arrangements, and bilateral relationships described in the preceding sections are durable across multiple electoral cycles in the participating capitals, and any disruption of them would require shifts in underlying interests rather than rhetorical adjustment. The analytical reading developed here is not a prediction of a specific outcome at a specific date. It is a framework for reading the next round of developments — the summits, the policy announcements, the data releases, the bilateral and multilateral diplomatic moves — against the structural constraints the framework identifies. Each subsequent development can be read as confirming or refining the framework's predictions, and the cumulative pattern across multiple developments is what produces the analytical clarity that policy work most often needs. The headline-driven coverage of any specific event will continue to misread the broader trajectory; the data-driven, frame-anchored reading developed here is the antidote to that misreading and is the analytical discipline the policy community most needs across the remainder of the decade. The arithmetic of the underlying interests does not change quickly. The political and rhetorical surface above the arithmetic does change, sometimes quickly, and reading the two together is what produces analytical durability and policy-relevant insight that survives the news cycle.
The institutional research that underwrites this reading — the policy papers, the journal articles, the open-source datasets, and the running track records of the named scholars — represents a body of work substantially larger than any single explainer can summarise. Readers seeking deeper engagement should consult the primary sources cited in the preceding sections directly. The reading developed here aims to be a useful entry point rather than a substitute for that primary literature, and the framing has been chosen to surface the analytical moves that carry the most explanatory weight across the largest set of subsequent developments. A reader returning to this material in a year, in three years, or in five years should still find the framework usable, because the structural relationships it describes change more slowly than the headline developments they organise. The decade ahead will produce many specific events that this analysis cannot anticipate. The framework, if it is the right one, will help organise those events as they arrive.