Iran-backed Houthi rebels in Yemen on October 31 officially entered the Israel-Hamas conflict. Houthi waded into the ongoing war and fired drones, missiles at southern city of Israel in the Red Sea. Houthis took responsibility after Israel`s military downed multiple "aerial targets" in separate incidents around Red Sea. “Houthi will continue to launch attack against Israel until Israeli aggression ceases” said Houthi Military Spokesperson. This was the first time since Israel used its “Arrow” aerial defence system since the outbreak of war with Hamas. Meanwhile, the Israeli National Security Adviser Tzachi Hanegbi said that the attacks against Israel were "intolerable".