Asian Markets Slide Amid Escalating Tensions, Oil Surges to $88.50 a Barrel

Markets across Asia closed lower on Tuesday amid mounting regional instability, with the Singapore Straits Times Index (^STI) falling 2.3% to 3,412.54. Investor sentiment weakened as military activity intensified in the South China Sea, prompting a flight to safe-haven assets and increased risk aversion in equities. Defense sector exposure in technology supply chains amplified market sensitivity, with Apple (AAPL) shares down 1.1% despite strong earnings, reflecting supply chain disruption fears. Energy markets reacted decisively, with Brent crude futures (CL=F) surging to $88.50 per barrel—the highest level since late 2023—driven by concerns over potential shipping lane disruptions. Exxon Mobil (XOM) rose 3.2% as investors priced in higher energy demand and longer-term supply risks. The rally in oil coincided with a 1.8% drop in regional tech equities, as Asian semiconductor exporters faced heightened scrutiny over logistics and export controls. The sell-off was broad-based, with Japanese and South Korean indices also under pressure: the Nikkei 225 declined 1.9%, and the KOSPI fell 2.1%. Analysts noted that high oil prices could weigh on inflation and central bank policies, particularly in energy-importing economies like Singapore and India. Meanwhile, bond yields across the region edged higher, with the 10-year Singapore government bond rising to 3.12%. Market participants are now monitoring diplomatic developments closely, particularly any statements from Beijing, Washington, or regional allies. The current environment underscores the fragility of global trade routes and the interconnectedness of geopolitical risk with energy and tech markets.