How chokepoint tensions are rippling through just-in-time production networks

Chokepoints, and their consequences: Tensions in Hormuz and the Red Sea are now directly hitting “developed markets,” rerouting supply chains for vehicles and electronics that make up nearly 44% of GCC exports from at-risk ports, according to a Fitch Solutions report.

Where does this lead? If disruptions become prolonged — and the war continues — just-in-time (JIT) production networks will face rising inventory volatility, longer lead times, and high ins. costs, especially in autos and electronics.

This matters because of how modern supply chains operate: Just-in-time (JIT) production means materials arriveonly when they are needed for production, keeping inventory levels low and reducing storage costs and waste. However, because it relies on precise timing and minimal stock buffers, disruptions in the supply chain can lead to shortages or production delays.

The chokepoint within the chokepoint

While headline exposure appears limited — imports from at-risk GCC ports account for just 1.6% on average across developed markets, but that risk is highly concentrated in specific high-value sectors, including autos, machinery, and petrochemicals.

Saudi Arabia and the UAE account for the vast majority of these at-risk imports for the US, Europe, and Japan. Which means that while a macroeconomic shock might be avoided at a national level, specific industries could face acute cost-push inflation and production bottlenecks.

The concentration goes even deeper: In the US, nearly 89% of all at-risk GCC imports originate from just two countries: Saudi Arabia at 55.4% and the UAE at 33.3%. Germany shows a similar pattern, sourcing over 90% from these two countries.

This reveals a second-order risk: Supply chains are not just regionally exposed, but concentrated in a narrow set of ports and routes. For operators in autos, machinery, and chemicals, Saudi and Emirati ports function as interchangeable nodes.

Bottlenecks are becoming binding constraints, a direct catalyst for rising prices and production stalls across sophisticated industrial sectors.

Fuel constraints emerge as the system tightens further

The system tightens around energy: The disruption has expanded beyond industrial production lines and is now impacting energy resources directly. Drone attacks on Fujairah port — a critical global bunkering hub — have disrupted terminals and tightened the supply of high-sulfur and very low-sulfur fuel oils. As vessels seek supply outside the Middle East to avoid the gridlock in the strait, fuel shortages are emerging in Singapore and parts of West Africa.

The strain is already visible: Singapore has already begun rationing shipping fuel, with some distributors canceling sales as demand outstrips supply. Latin American markets like Panama and Colombia are seeing higher volumes.

Prices are responding accordingly: The price of very low-sulfur fuel oil in Singapore has already doubled, reaching approximately USD 1.2k per ton — a cost shock that is now being transmitted through global trade routes.

Where will the strain hit first?

The impact will not be evenly distributed: Countries like Japan — where the UAE is the source for 53.6% of at-risk imports — as well as South Korea are likely to experience acute supply chain stress much earlier than their peers. For these nations, the bottleneck in the Strait of Hormuz is a direct constraint on the precision engineering and electronics sectors that anchor their economies

Who’s in the firing line? Japan’s vehicle and machinery sector is highly vulnerable, accounting for 84% of its at-risk imports, while for South Korea, the figure is 58%. Over in Europe, Germany faces potential chokepoints in machinery at nearly 26% and petrochemicals at some 23%. The US is most exposed in terms of its mineral products sector — accounting for 22.3% and its machinery sector at nearly 22%.