The United States carried out a strike on a Houthi radar site in Yemen early Saturday local time, U.S. Central Command said. A Houthi official told Al Jazeera on Saturday that the latest strike caused no injuries or damage, and promised a “firm, strong and effective response.” It follows a remarkable escalation in the Middle East this week, when a U.S.- and U.K.-led coalition attacked Houthi militants in Yemen, striking dozens of targets and using more than 150 munitions.