China's sharp decline in jet fuel exports due to the US-Israel war on Iran has left Australia and Japan scrambling for alternatives, with a potential supply crunch looming.

China’s exports of jet fuel have declined sharply in recent weeks amid the US-Israel war on Iran, leaving countries including Australia and Japan facing a supply crunch and scrambling to find alternative sellers. China is Asia-Pacific’s largest jet fuel and kerosene exporter, but shipments from the country fell nearly 40 per cent month on month in March to 204,000 barrels per day, figures from trade data provider Kpler showed. The cutback is likely to hit hardest in Australia and Japan, which...