AL-MUKALLA: Yemen鈥檚 Iran-backed Houthis have threatened a 鈥渟trong and effective response鈥� after the US carried out another strike in the country, ratcheting up tensions as Washington vows to protect shipping from attacks by the group.

The latest strike, which the US said hit a radar site, came a day after dozens of American and British attacks on Houthi facilities in Yemen.

鈥淭his new strike will have a firm, strong and effective response,鈥� Houthi spokesperson Nasruldeen Amer said, adding there had been no injuries nor 鈥渕aterial damage.鈥�

Mohammed Abdulsalam, another Houthi spokesperson, said the strikes, including the one that hit a military base in Sanaa, had had no significant impact on the group鈥檚 ability to prevent Israel-affiliated vessels from passing through the Red Sea and the Arabian Sea.

Hans Grundberg, UN special envoy for Yemen, urged maximum restraint by 鈥渁ll involved鈥� in Yemen and warned of an increasingly precarious situation in the region.

Grundberg said that the UN-brokered peace effort that resulted in Yemeni parties agreeing to support a road map for peace was at risk of being undermined due to the latest escalation in tension in the Red Sea.

Further actions might aggravate Yemen鈥檚 already difficult situation, undermine maritime trade route security, and lead to increased tension in the region, he warned.

His office said that Grundberg 鈥渘otes with serious concern the increasingly precarious regional context and its adverse impact on peace efforts in Yemen and stability and security in the region.鈥�

International mediators are concerned that the US attacks on Houthi-held regions will prompt the Yemeni militia to abandon UN-brokered peace talks and begin armed operations throughout the country.

The US Central Command said on Saturday that the USS Carney navy destroyer fired Tomahawk land attack missiles at a Houthi radar location in Yemen at 3:45 a.m. on Jan. 13, without naming the targeted site, adding that the latest and previous strikes on Houthi-controlled areas of Yemen were intended to impact on the militia鈥檚 military power and prevent it from threatening maritime navigation traffic.

The Houthis said that Saturday鈥檚 strikes hit Al-Dailami airbase north of Sanaa.

The Houthis said the attacks on Yemen would not 鈥済o unpunished,鈥� branding the attacks as a 鈥渂latant aggression鈥� designed to force the group to abandon its support for the Palestinian people.

The US and UK militaries launched dozens of strikes on more than 60 targets in Sanaa, Hodeidah, Taiz, Saada, Hajjah, and Dhamar on Friday, striking 鈥渃ommand-and-control nodes, munitions depots, launching systems, production facilities and air defense radar systems鈥� in retaliation for the Houthi missile and drone attacks on commercial and navy ships in the Red Sea.

The Houthis accuse the US of attempting to force the militia into ceasing its assaults against Israeli-linked ships or ships bound for Israel, actions which are intended to persuade Israel to ease its blockade of Gaza.

President Joe Biden said the US had delivered a private message to Iran about the Houthis.

鈥淲e delivered it privately and we鈥檙e confident we鈥檙e well-prepared,鈥� Biden told reporters at the White House.

Separately, Yemen鈥檚 legitimate government said that two of its soldiers were killed in fighting with the Houthis in the western province of Hodeidah.

The Houthis on Friday shelled the Yemeni government鈥檚 forces in Hodeidah鈥檚 Hays district before attacking, triggering heavy clashes that left two government soldiers and a number of Houthis dead.

Hostilities across Yemen鈥檚 battlefields have largely subsided since the UN-brokered truce came into effect in April 2022.