Yemen's Houthi movement warned the United States against hitting Yemeni territory again after US cruise missiles targeted coastal radar sites on Thursday in retaliation for failed missile attacks on a Navy destroyer. 'The direct American attack targeting Yemeni soil this morning is not acceptable,' Brigadier General Sharaf Luqman, a spokesman for Yemeni forces fighting alongside the Houthis, was quoted as saying by the Houthi-controlled Saba news agency. 'Yemen has the right to defend itself and we would deal with any development with the right steps.' He reiterated a denial that Iran-aligned Houthi forces had carried out missile attacks on the US warship.