 The military says, based on initial findings, no air raid sirens were activated ahead of the explosion due to a human error. The Houthi militia, backed by Iran, says it used a new drone called Yaffa, which can evade Israeli air defense systems. Gordon. Thank you, Dom. The Houthis, which have attacked commercial ships in the Red Sea since last year and have targeted southern Israel with missiles, said that it would continue to strike Israel in solidarity with Palestinians in Gaza.