France, March 8 -- As the conflict spilled into its second week, the regional repercussions spiralled, with Saudi Arabia intercepting a wave of drones headed for targets including the diplomatic quarter in capital Riyadh and Kuwait saying an attack hit fuel tanks at its international airport.

The strike on Kuwait's aviation fuel storage compounded fears over energy supplies with the country's national oil company also announcing a cut in crude production over threats to the Strait of Hormuz, where a fifth of the world's oil and gas transit.

Tehran accused the US and Israel of striking an oil depot in the Iranian capital on Saturday, the first reported assault on the Islamic republic's oil infrastructure as stock markets have slumped and...