Saudi Arabian forces have launched airstrikes against targets in Yemen, including the strategic island of Kamaran off the western coast, according to reports from a Houthi-controlled television channel.
The attacks hit the Hodaydah province, marking a direct military response by Riyadh to recent escalations by the militant group.
Brent crude futures faced renewed pressure as traders assessed the risk of a widening conflict in the Red Sea.
The market reaction reflects growing concerns that the cycle of retaliation could disrupt critical shipping lanes and energy infrastructure, adding a geopolitical premium to oil prices.
The Saudi strikes come shortly after Houthi rebels claimed responsibility for hitting two Saudi oil tankers in the Red Sea.
The militants stated that the attacks were a direct response to what they described as violations of their self-imposed maritime blockade against the kingdom.