G7 Warns of Global Economic Shockwaves from Chinese Patrols off Taiwan

Growing military and maritime tensions around Taiwan are likely to severely disrupt global supply chains, drive up shipping costs and impact the supply of advanced microchips worldwide. This could have indirect repercussions for import-dependent economies such as Mauritius. G7 foreign ministers recently issued a joint statement expressing concern over increased Chinese activities in the waters east of Taiwan. The statement, released on 11 November 2026, urged a peaceful resolution through dialogue and reaffirmed opposition to any unilateral change to the status quo by force or coercion.

China has stepped up coastguard patrols in the area since June, prompting Taiwanese authorities to suspect Beijing is preparing for a potential maritime blockade. The patrols do not currently affect the primary shipping corridor, the Taiwan Strait, which links East Asia's industrial economies to international markets. A study by the Center for Strategic and International Studies found that roughly $2.45 trillion worth of goods transited the strait in 2022, accounting for more than a fifth of global maritime trade value that year.

The Taiwan Strait is critical for global trade, with approximately $1.4 trillion of China's imports and exports passing through the strait in 2022. Any blockade, navigation restriction or conflict would force shipping lines to reroute vessels over longer distances, extending delivery times and driving up freight costs. A report by the United Nations Conference on Trade and Development highlighted how disruptions in the Red Sea forced ships to divert around Africa, lengthening voyages and raising operating expenses.

Taiwan's dominance in producing advanced semiconductors is another critical vulnerability. Nearly 90 per cent of the world's mass-produced, leading-edge semiconductors are concentrated in Taiwan, according to a 2025 report by the US Congressional Research Service. The island is home to Taiwan Semiconductor Manufacturing Company, one of the world's leading chipmakers. Replacing Taiwanese factories quickly would be virtually impossible due to the specialised facilities, costly equipment and skilled workforce required.

A prolonged halt in semiconductor production would trigger manufacturing delays across multiple sectors, with the severity depending on existing inventories and alternative capacity. Higher freight expenses and component shortages could saddle businesses with added costs, though consumer prices would not necessarily rise immediately. The impact on prices would depend on market competition, stock levels and companies' ability to absorb expenses.

Even distant economies like Mauritius face potential knock-on effects from a broader crisis around Taiwan. China was Mauritius's largest single supplier in 2025, accounting for 17.5 per cent of the country's merchandise imports, valued at roughly $1.2 billion. A major trade disruption in Asia poses indirect risks for Mauritius, including higher procurement costs, longer delivery times and foreign manufacturing slowdowns.

While the current patrols do not make a blockade or conflict inevitable, Taiwan's strategic geography and industrial clout leave the global economy exposed to an uncertain trajectory. The G7's warning highlights the need for a peaceful resolution to the tensions. As the situation simmers, the global economy, from major industrial powers to smaller importing nations, remains vulnerable to the potential consequences of increased military and maritime tensions around Taiwan.

Key points

• G7 foreign ministers warn of global economic shockwaves from Chinese patrols off Taiwan.
• Taiwan's dominance in advanced semiconductor production poses a critical vulnerability for the global economy.
• A broader crisis around Taiwan could have indirect repercussions for import-dependent economies like Mauritius.