Yemen's Houthi rebels claimed a missile strike on southern Saudi Arabia, opening a volatile new front as regional conflict deepens and threatens energy routes.

Military escalations between the US and Iran have led to a halt in oil shipments from the port of Fujairah, fueling fears of a blockade in critical maritime straits.

Following a Yemeni government strike on the Sanaa airport runway, Houthi forces have vowed retaliation, threatening the stability of the 2022 truce.