Japanese shipping giants have suspended operations in the Persian Gulf following the death of Iran's Supreme Leader. Nippon Yusen, Japan's largest shipper, confirmed halting all vessels through the Strait of Hormuz as the waterway faces "practical closure." The move follows heightened military tensions and a U.S. military warning advising commercial traffic to maintain a 30-nautical-mile buffer from American assets to avoid potential crossfire.

The disruption poses severe risks to Japan's economy, which depends on the Middle East for 90% of its crude oil imports. While Japanese refiners claim no immediate supply issues, the standstill of tankers in safe waters creates uncertainty. For airlines, the conflict has already forced schedule changes, with Japan Airlines canceling six major rotations between Haneda and Doha through March 3, stranding over 1,000 passengers and demonstrating how quickly localized conflicts can ripple through global travel networks.

Japan's decades-long effort to diversify energy sources hasn't reduced its vulnerability to Middle Eastern instability. The real test will come if standby orders for ships become permanent rerouting around the Cape of Good Hope, adding weeks to delivery times and potentially sending shockwaves through Japanese energy markets. The current situation exposes the persistent fragility of global supply chains in an increasingly volatile geopolitical environment.