Sri Lanka has declared every Wednesday a public holiday to conserve fuel as the island nation grapples with possible shortages in the wake of the US and Israel’s war with Iran.

“We must prepare for the worst, but hope for the best,” President Anura Kumara Dissanayake said at an emergency meeting with senior officials on Monday.

This is the latest in a series of belt-tightening measures undertaken by Asian countries since the war hoked off the Strait of Hormuz, which used to carry millions of barrels of oil from the Gulf into the region.

Nearly 90% of all the oil and gas flowing through the strait last year was bound for Asia, which is the world’s largest oil-importing region.