War in the Middle East has Exposed the Vulnerability of Global Choke Points

Syllabus: GS2/IR

Context

• The conflict around the Strait of Hormuz has highlighted how modern power still runs through a surprisingly small number of vulnerable trade routes.

About

• During the First World War, the struggle over the Dardanelles was driven by the strategic importance of a narrow waterway linking the Mediterranean to the Black Sea.
  • The Dardanelles is a strategically significant strait that serves as a natural boundary between Europe and Asia, separating the Gallipoli peninsula in Eastern Europe from Anatolia in Asia.
• In the Second World War, the Battle of the Atlantic was essentially a contest over whether Britain and its allies could keep open the sea routes on which the war depended. 
• Choke points did not merely influence those conflicts; they helped determine their outcome.
• Strait of Hormuz: It is one of the world’s most critical maritime choke points, carrying roughly one-fifth of global oil and petroleum consumption and a similar share of liquefied natural gas (LNG) trade in early 2025.

Other Choke Points

• Malacca Strait: A similar vulnerability runs through the Malacca Strait into the South China Sea. 
  • Malacca is the world’s busiest oil transit corridor, linking Gulf producers to east Asia’s industrial economies, while the South China Sea carries roughly one-third of global shipping.
  • Any conflict or disruption in the wider region would threaten not just the maritime routes surrounding it, but also global supply chains.

• The Strait of Bab el-Mandeb: Disruptions at the Bab el-Mandeb Strait in the Red Sea quickly raise shipping costs, delay deliveries, and affect food prices.

Modern Chokepoints Beyond Sea Routes

• Industrial and Digital Systems: Taiwan and China dominates global foundry capacity and produces most of the world’s most advanced logic chips.
  • It has turned the Taiwan Strait into a double choke point: a shipping corridor on one side, a fabrication bottleneck on the other.
  • Any conflict or disruption would cut the supply of components of smartphones to cloud computing and modern vehicles.
• Netherlands, ASML is the sole commercial supplier of extreme ultraviolet lithography machines, without which the most advanced semiconductors cannot be mass-produced.
• Race for Resources: Rare earths and minerals that form the components on which high-tech devices rely are also now a critical global choke point.
  • China is the leading refiner for 19 of 20 important strategic minerals, this means that the industries meant to define the coming era are exposed to a small set of processing hubs.
• Subsea Cables: Subsea cables carry the overwhelming majority of intercontinental traffic, and Egypt has become one of the critical passage points for cables linking Europe and Asia.
  • More than 90% of Europe-Asia subsea cable capacity runs through the Red Sea cable corridor, making it a choke point of a different kind.
• Climate Change: The Panama Canal has faced another increasingly-frequent disruption to trade flows – that of climate change.
  • Reduced water levels in the region constrained canal traffic and forced shippers to reroute or wait, highlighting how climate stress is now a first-order geopolitical variable.

Conclusion

• The Iran war has exposed the fragility of a global order built on narrow corridors and concentrated capabilities.
  • In normal times, these choke points are easy to overlook but in wartime, or even prolonged crises, they reappear as hidden levers of escalation.
• Today’s choke points also include chip fabs, lithography tools and fibre-optic cables on the ocean floor which have widened the vulnerability.
• The strategic significance of choke points lies not just in their throughput but in the absence of substitutes.

Source: WEF